APA aipamena

Verma, C. D. (1990). Sterling general studies & general knowledge 1990 (Ed.11th rev & enl.).

Chicago Style aipamena

Verma, C D. Sterling General Studies & General Knowledge 1990. Ed.11th rev & enl. New Delhi, Sterling, 1990.

MLA aipamena

Verma, C D. Sterling General Studies & General Knowledge 1990. Ed.11th rev & enl. 1990.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.