Dyfyniad APA

Wareing, P. F. (1971). Potential crop production: Case study. Heinemann Educational.

Dyfyniad Arddull Chicago

Wareing, P. F. Potential Crop Production: Case Study. London: Heinemann Educational, 1971.

Dyfyniad MLA

Wareing, P. F. Potential Crop Production: Case Study. Heinemann Educational, 1971.

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