APA aipamena

Agrawal, V. P. (1990). Environment and natural resources.

Chicago Style aipamena

Agrawal, V P. Environment and Natural Resources. Society of Biosciences, Muzaffarnagar, 1990.

MLA aipamena

Agrawal, V P. Environment and Natural Resources. 1990.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.