Παραπομπή APA

Patel, B. P. (1968). Indian field crops. Atul Prakashan.

Παραπομπή Chicago Style

Patel, B P. Indian Field Crops. Gujarat: Atul Prakashan, 1968.

Παραπομπή MLA

Patel, B P. Indian Field Crops. Atul Prakashan, 1968.