Cita APA

Johnston, T. D., & Johnston, T. D. (1978). Limiting factor economic evaluation of cropping systems. Turrialba, C.R.: CATIE Annual Crops Program.

Citación estilo Chicago

Johnston, T. David, y T. David Johnston. Limiting Factor Economic Evaluation of Cropping Systems. Turrialba, C.R.: CATIE Annual Crops Program, 1978.

Cita MLA

Johnston, T. David, y T. David Johnston. Limiting Factor Economic Evaluation of Cropping Systems. Turrialba, C.R.: CATIE Annual Crops Program, 1978.