APA استشهاد

Beer, J., DeClerck, F., & Rapidel, B. (2011). Ecosystem Services from Agriculture and Agroforestry: Measurement and Payment.

استشهاد بنمط شيكاغو

Beer, John, Fabrice DeClerck, و Bruno Rapidel. Ecosystem Services from Agriculture and Agroforestry: Measurement and Payment. London, Earth Scan, 2011.

MLA استشهاد

Beer, John, et al. Ecosystem Services from Agriculture and Agroforestry: Measurement and Payment. 2011.