APA (7th ed.) Citation

Oldroyd, H. (1973). Insects and their world / by Harold Oldroyd (3rd ed.). British Museum (Natural History).

Chicago Style (17th ed.) Citation

Oldroyd, Harold. Insects and Their World / by Harold Oldroyd. 3rd ed. London: British Museum (Natural History), 1973.

MLA (9th ed.) Citation

Oldroyd, Harold. Insects and Their World / by Harold Oldroyd. 3rd ed. British Museum (Natural History), 1973.

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