APA-viite (7. p.)
Singh, O. P. (2012). Art of effective communication in group discussion and interview. S. Chand & Company Ltd.
Chicago-viite (17. p.)
Singh, O. P. Art of Effective Communication in Group Discussion and Interview. Kolkata: S. Chand & Company Ltd, 2012.
MLA-viite (9. p.)
Singh, O. P. Art of Effective Communication in Group Discussion and Interview. S. Chand & Company Ltd, 2012.
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