Greenfield T. Tony. (2002). Research Methods for Postgraduates (2nd ed.). London, Arnold, 2002.
Chicago-viite (17. p.)Greenfield T. Tony. Research Methods for Postgraduates. 2nd ed. London, Arnold, 2002, 2002.
MLA-viite (9. p.)Greenfield T. Tony. Research Methods for Postgraduates. 2nd ed. London, Arnold, 2002, 2002.
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