APA ציטוט

Spedding, C. R. W. (1988). An introduction to agricultural systems: C. R. W. Spedding. London: Elsevier Applied Science.

Trích dẫn kiểu Chicago

Spedding, C. R. W. An Introduction to Agricultural Systems: C. R. W. Spedding. London: Elsevier Applied Science, 1988.

ציטוט MLA

Spedding, C. R. W. An Introduction to Agricultural Systems: C. R. W. Spedding. London: Elsevier Applied Science, 1988.