APA (7th ed.) Citation

Christopher, J. (1973). The guardians. Heinemann Educational Books.

Chicago Style (17th ed.) Citation

Christopher, John. The Guardians. London: Heinemann Educational Books, 1973.

MLA (9th ed.) Citation

Christopher, John. The Guardians. Heinemann Educational Books, 1973.

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