APA (7th ed.) Citation

Oldroyd, H. (1968). Elements of entomology: [an introduction to the study of insects]. Weidenfeld and Nicolson.

Chicago Style (17th ed.) Citation

Oldroyd, Harold. Elements of Entomology: [an Introduction to the Study of Insects]. New York: Weidenfeld and Nicolson, 1968.

MLA (9th ed.) Citation

Oldroyd, Harold. Elements of Entomology: [an Introduction to the Study of Insects]. Weidenfeld and Nicolson, 1968.