APA (7th ed.) Citation

Wodehouse, P. G. (1971). The girl in blue (1. Sphere Books ed.). Sphere Books.

Chicago Style (17th ed.) Citation

Wodehouse, Pelham G. The Girl in Blue. 1. Sphere Books ed. London: Sphere Books, 1971.

MLA (9th ed.) Citation

Wodehouse, Pelham G. The Girl in Blue. 1. Sphere Books ed. Sphere Books, 1971.