Παραπομπή APA

Sekhon, G., & Tandon, H. (1988). Potassium research and agricultural production in india. Fertilizer Development and Consultation Organizati.

Παραπομπή Chicago Style

Sekhon, G.S, και H.L.S Tandon. Potassium Research and Agricultural Production in India. New Delhi: Fertilizer Development and Consultation Organizati, 1988.

Παραπομπή MLA

Sekhon, G.S, και H.L.S Tandon. Potassium Research and Agricultural Production in India. Fertilizer Development and Consultation Organizati, 1988.