APA
Singh O. P., . (2018). Art of effective communication in group discussion and interview 2nd ed. S.Chand and company: New Delhi.
Chicago
Singh O P, . 2018. Art of effective communication in group discussion and interview 2nd ed. S.Chand and company: New Delhi.
Harvard
Singh O. P., . (2018). Art of effective communication in group discussion and interview 2nd ed. S.Chand and company: New Delhi.
MLA
Singh O P, . Art of effective communication in group discussion and interview 2nd ed. S.Chand and company: New Delhi. 2018.