Παραπομπή APA

Gopal Chandra De. (1989). Fundamentals of agronomy. Oxford & IBH publishing Co.

Παραπομπή Chicago Style

Gopal Chandra De. Fundamentals of Agronomy. New Delhi: Oxford & IBH publishing Co, 1989.

Παραπομπή MLA

Gopal Chandra De. Fundamentals of Agronomy. Oxford & IBH publishing Co, 1989.