APA (7th ed.) Citation

Richens, R. H. (1983). Elm / R.H. Richens. Cambridge University Press.

Chicago Style (17th ed.) Citation

Richens, R. H. Elm / R.H. Richens. Cambridge: Cambridge University Press, 1983.

MLA (9th ed.) Citation

Richens, R. H. Elm / R.H. Richens. Cambridge University Press, 1983.

Warning: These citations may not always be 100% accurate.