There is a bewildering number of academic styles, all of which are acceptable if used consistently. Students should consult their supervisor and agree on an appropriate style between the two of you.
The Documentary-Note or 'Humanities' style is described in:
The Chicago Manual of Style, 14th edition (Chicago: Univ. of Chicago Press, 1993), ch.15: 'Documentation I: Notes and Bibliographies';
MHRA Style Book: Notes for Authors, Editors, and Writers of Theses, fifth edition (London: Humanities Research Association, 1996), ch. 12 'References' and passim;
Kate Turabian, A Manual for Writers of Term Papers, Theses, and Dissertations, rev. John Grossman and Alice Bennett, 6th edition (Chicago: Univ. of Chicago Press, 1996), chs 8, 9, and 11; and
Carole Slade, Form and Style: Research Papers, Reports, Theses (12th edition, Boston: Houghton Mifflin, 2003), ch.7.
The Author-Date or Name-Year or 'Harvard' style is described in:
The Chicago Manual of Style, ch.16: 'Documentation 2: Author-Date Citations and Reference Lists';
Scientific Style and Format, 6th edition (Cambridge: Cambridge Univ. Press, 1994), ch.30;
Turabian, chs 10 and 11; and
The Works-Cited or 'MLA' style is described in:
Joseph Gibaldi, MLA Style Manual and Guide to Scholarly Publishing, 3rd edition (New York: Modern Language Association, 1998), chs.6 and 7;
Joseph Gibaldi, MLA Handbook for Writers of Research Papers, 5th edition (New York: Modern Language Association, 1999), chs.4 and 5; and
The Citation-Sequence or 'Vancouver' style is described in:
Scientific Style and Format, ch.30.
Other reference works that may be useful:
Wayne C. Booth, Gregory G. Colomb and Joseph M. Williams, The Craft of Research, 2nd edition (Chicago: University of Chicago Press, 2003).
Thomas Mann, The Oxford Guide to Library Research (New York: Oxford University Press, 1998).