Dyfyniad APA

Cooper, J. P., & Wareing, P. F. (1971). Potential crop production: A case study. Heinemann Educational Books.

Dyfyniad Arddull Chicago

Cooper, J P., and P F. Wareing. Potential Crop Production: A Case Study. London: Heinemann Educational Books, 1971.

Dyfyniad MLA

Cooper, J P., and P F. Wareing. Potential Crop Production: A Case Study. Heinemann Educational Books, 1971.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.