APA Citatie

Knowler, F., & Watkin, J. (1960). Practical Course in Agricultural Chemistry (2.). Macmillan and Company Ltd.

Chicago Style citaat

Knowler, Frank, en J.Elphin Watkin. Practical Course in Agricultural Chemistry. 2. London: Macmillan and Company Ltd, 1960.

MLA citatie

Knowler, Frank, en J.Elphin Watkin. Practical Course in Agricultural Chemistry. 2. Macmillan and Company Ltd, 1960.

Let op: Deze citaties zijn niet altijd 100% accuraat.