APA aipamena

Ravivarma,TR. (1986). Vazhakrishi. Kerala Agricultural University.

Chicago Style aipamena

Ravivarma,TR. Vazhakrishi. Thrissur: Kerala Agricultural University, 1986.

MLA aipamena

Ravivarma,TR. Vazhakrishi. Kerala Agricultural University, 1986.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.