Παραπομπή APA

Black, C. (1968). Soil-Plant relationships (2nd.). Wiley Eastern.

Παραπομπή Chicago Style

Black, C.A. Soil-Plant Relationships. 2nd. New Delhi: Wiley Eastern, 1968.

Παραπομπή MLA

Black, C.A. Soil-Plant Relationships. 2nd. Wiley Eastern, 1968.