APA (7th ed.) Citation

Spedding, C. R. W. (1975). The biology of agricultural systems. Academic Press.

Chicago Style (17th ed.) Citation

Spedding, C. R. W. The Biology of Agricultural Systems. London, New York: Academic Press, 1975.

MLA (9th ed.) Citation

Spedding, C. R. W. The Biology of Agricultural Systems. Academic Press, 1975.