APA (7th ed.) Citation

Peyton, K. M. (1981). The edge of the cloud. Heinemann Educational Books.

Chicago Style (17th ed.) Citation

Peyton, K. M. The Edge of the Cloud. London: Heinemann Educational Books, 1981.

MLA (9th ed.) Citation

Peyton, K. M. The Edge of the Cloud. Heinemann Educational Books, 1981.

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