APA Citatie

SING, R., & SINGH, S. S. (2011). PRINCIPLES AND PRACTICES OF AGRONOMY (5.).

Chicago Style citaat

SING, RAJESH, en S S. SINGH. PRINCIPLES AND PRACTICES OF AGRONOMY. 5. NEW DELHI, KALYANI PUBLISHERS, 2011.

MLA citatie

SING, RAJESH, en S S. SINGH. PRINCIPLES AND PRACTICES OF AGRONOMY. 5. 2011.