Παραπομπή APA

Maltherbe, I. D. (1953). Soil fertility (3.). Oxford university press.

Παραπομπή Chicago Style

Maltherbe, I Dev. Soil Fertility. 3. London: Oxford university press, 1953.

Παραπομπή MLA

Maltherbe, I Dev. Soil Fertility. 3. Oxford university press, 1953.