Cita APA (7th ed.)

Pimentel, D., Culliney, T. W., Buttler, I. W., Reinemann, D. J., & Beckman, K. B. (1989). Low-input sustainable agriculture using ecological management practices.

Cita Chicago (17th ed.)

Pimentel, David, Thomas W. Culliney, Imo W. Buttler, Douglas J. Reinemann, i Kenneth B. Beckman. Low-input Sustainable Agriculture Using Ecological Management Practices. 1989.

Cita MLA (9th ed.)

Pimentel, David, et al. Low-input Sustainable Agriculture Using Ecological Management Practices. 1989.