APA (7th ed.) Citation

Ryan, P. (1971). The invasion of the moon 1957-70 (Rev. & enl. ed.). Penguin Books.

Chicago Style (17th ed.) Citation

Ryan, Peter. The Invasion of the Moon 1957-70. Rev. & enl. ed. Harmondsworth, England: Penguin Books, 1971.

MLA (9th ed.) Citation

Ryan, Peter. The Invasion of the Moon 1957-70. Rev. & enl. ed. Penguin Books, 1971.