Gaya APA

Balasubramaniyan, P., Palaniappan, S. (2007). Principles and pratices of agronomy (2 th Ed.). India: Agrobios.

Gaya MLA

Balasubramaniyan, P.., Palaniappan, Sp.. "Principles and pratices of agronomy". 2 th Ed. India: Agrobios, 2007. Text.