Citazione APA

Black, C. A. (1957). Soil plant relationships (2.). Wiley Eastern private Limited.

Stile di citazione Chicago

Black, C A. Soil Plant Relationships. 2. Newdelhi: Wiley Eastern private Limited, 1957.

Citazione MLA

Black, C A. Soil Plant Relationships. 2. Wiley Eastern private Limited, 1957.