Παραπομπή APA

Singh, K., & Purohit, S. (1995). Plant productivity under environmental stress. Agro Botanical Publishers.

Παραπομπή Chicago Style

Singh, Karan, και S.S Purohit. Plant Productivity Under Environmental Stress. Bikaner: Agro Botanical Publishers, 1995.

Παραπομπή MLA

Singh, Karan, και S.S Purohit. Plant Productivity Under Environmental Stress. Agro Botanical Publishers, 1995.