Cita APA

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

Citación estilo Chicago

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

Cita MLA

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