APA (7th ed.) Citation

Appel, F., & Wollek, J. (1971). The Moon and beyond. The Reader's Digest Association.

Chicago Style (17th ed.) Citation

Appel, Fred, and James Wollek. The Moon and Beyond. London: The Reader's Digest Association, 1971.

MLA (9th ed.) Citation

Appel, Fred, and James Wollek. The Moon and Beyond. The Reader's Digest Association, 1971.