APA Citatie

Beer, J., Harvey, C. A., Ibrahim, M. A., Somarriba, E., Harmand, J. M., & Jiménez Otárola, F. (2003). Service functions of agroforestry systems.

Chicago Style citaat

Beer, John, Celia A. Harvey, Muhammad Akbar Ibrahim, Eduardo Somarriba, Jean Michel Harmand, en Francisco Jiménez Otárola. Service Functions of Agroforestry Systems. 2003.

MLA citatie

Beer, John, et al. Service Functions of Agroforestry Systems. 2003.