APA aipamena

Venkateswaran, P. A. (1961). Agriculture in south India. Directorate of extension.

Chicago Style aipamena

Venkateswaran, P A. Agriculture in South India. Newdelhi: Directorate of extension, 1961.

MLA aipamena

Venkateswaran, P A. Agriculture in South India. Directorate of extension, 1961.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.