Παραπομπή APA

Singh, R. S. (1975). Introduction to principles of plant pathology. Oxford & IBH publishing co. pvt. ltd.

Παραπομπή Chicago Style

Singh, R S. Introduction to Principles of Plant Pathology. New Delhi: Oxford & IBH publishing co. pvt. ltd, 1975.

Παραπομπή MLA

Singh, R S. Introduction to Principles of Plant Pathology. Oxford & IBH publishing co. pvt. ltd, 1975.