Παραπομπή APA

Ram Iqbal Singh, Singh, D. S., & Singh, G. N. (1987). Agricultural marketing in India: Analysis, planning and development.

Παραπομπή Chicago Style

Ram Iqbal Singh, D S. Singh, και G N. Singh. Agricultural Marketing in India: Analysis, Planning and Development. Allahabad, Chugh Publications, 1987.

Παραπομπή MLA

Ram Iqbal Singh, et al. Agricultural Marketing in India: Analysis, Planning and Development. 1987.