Παραπομπή APA

Jag Paul Sharma. (2017). Organic crop production principles and practices V.1: Principles and general aspects. Kalyani Publishers.

Παραπομπή Chicago Style

Jag Paul Sharma. Organic Crop Production Principles and Practices V.1: Principles and General Aspects. Ludhiana: Kalyani Publishers, 2017.

Παραπομπή MLA

Jag Paul Sharma. Organic Crop Production Principles and Practices V.1: Principles and General Aspects. Kalyani Publishers, 2017.