APA (7th ed.) Citation

O'Brien, R. C. (1976). Z for Zachariah: A novel. Heinemann Educational Books.

Chicago Style (17th ed.) Citation

O'Brien, Robert C. Z for Zachariah: A Novel. London: Heinemann Educational Books, 1976.

MLA (9th ed.) Citation

O'Brien, Robert C. Z for Zachariah: A Novel. Heinemann Educational Books, 1976.