I am not a fan of bibliographies: if you read it and it was not relevant to the report, then I don't need to know that!  References should be cited in the text and traceable from a list at the end of the report! The Harvard Referencing system uses an author(s) name(s) and year in the text with a list of references in alphabetical order by surname, then in chronological order by year.  The numbered reference system has a number (either in square brackets: [..] or as a superscript) in the text with a numerical list of references, although it is common to also name the author(s) of the information.

In the body text, the convention is that:

• a single author is referred to using only the surname
  (where different authors with the same surname and year are cited in the Harvard system distinguish them by e.g. (2016a) or (2016b),
• for two authors, both surnames are used, e.g. Kelly and Tyson,
• for more than two authors, just use the first author surname then et al., e.g. Smith et al.
  (et al. is the abbreviated form (hence the full-stop) of the Latin (hence the italics) for “and others”).

The reference list should show the surnames and initials of all authors of the cited work.  In the Harvard system, when there are multiple papers by the same first author, the reference list is normally organised in alphabetical order, then in the same sequence as the three bullet points above, and finally in chronological order by year.

Current best practice is to also include the DOI (Digital Object Identifier)
   where one is available, normally at the end of the listed reference as "DOI: 10.1016/B978-1-78242-250-1.00008-9".
If you precede a DOI (an enduring URL) with https://doi.org/ you should always get to the desired paper.

Although there may appear to be some redundant information in these formats, there is also an insurance against typing errors (and/or poor photocopies) corrupting the information to the extent that the item is irretrievable.  Only the information in the right-hand column is needed (the left-hand column is simply for explanation).

Books

Chapters in books

Journal papers

Conference papers

Reports

Internet sources

The digital object identifier (DOI) system provides persistent and actionable identification and interoperable exchange of managed information on digital networks [DOI Handbook]. Always include the DOI if available.

The minimum citation should be a full Uniform Resource Locator (URL) - not just the domain name - and the date accessed.
In order to be certain that you have the correct URL, <right click> on the page and select Properties to display the full Address (URL).
Do check for author names and any dates given particularly as these may be at the end of the page.
For more information see:

• Citing References in a Bibliography, University College London, accessed 16:12 on 11 September 2014.
• JR Walker and T Taylor, The Columbia Guide to Online Style: second edition, Columbia University Press, 2006. ISBN 978-0-231-13211-4.
• Citing Electronic Sources - a bibliography, Library and Archives Canada, created 26 January 1997 - updated 27 May 2003, accessed 16:15 on 11 September 2014.
• Xia Li and Nancy B Crane, Electronic styles - a handbook for citing electronic information - second edition, Information Today, 1996.  ISBN 0-88736-998-7.  PU CSH Library.