APA (7th ed.) Citation

Langer, R. H. M., & Hill, G. D. (1982). Agricultural plants. Cambridge University Press.

Chicago Style (17th ed.) Citation

Langer, R. H. M., and G. D. Hill. Agricultural Plants. London ; New York: Cambridge University Press, 1982.

MLA (9th ed.) Citation

Langer, R. H. M., and G. D. Hill. Agricultural Plants. Cambridge University Press, 1982.