APA (7th ed.) Citation

Cresswell, H., & Floyd, G. (1976). The night-watchmen. Puffin Books u.a.

Chicago Style (17th ed.) Citation

Cresswell, Helen, and Gareth Floyd. The Night-watchmen. London: Puffin Books u.a, 1976.

MLA (9th ed.) Citation

Cresswell, Helen, and Gareth Floyd. The Night-watchmen. Puffin Books u.a, 1976.