Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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