APA引文

Puri, G. (1991). English conversation for all occasions. C.S.R.

芝加哥风格引文

Puri, Gopal. English Conversation for All Occasions. New Delhi: C.S.R, 1991.

MLA引文

Puri, Gopal. English Conversation for All Occasions. C.S.R, 1991.