APA (7. basım) Alıntı

Robertson, T. d., English, B. C. d., & Alexander, R. R. d. (1998). Evaluating natural resource use in agriculture. Iowa State University.

Chicago Style (17. basım) Atıf

Robertson, Thyrele derl, Burton C. derl English, ve Robert R. derl Alexander. Evaluating Natural Resource Use in Agriculture. Iowa: Iowa State University, 1998.

MLA (9th ed.) Atıf

Robertson, Thyrele derl, et al. Evaluating Natural Resource Use in Agriculture. Iowa State University, 1998.