APA (7th ed.) Citation

Clifton, M. (1963). When they come from space. Macfadden Books.

Chicago Style (17th ed.) Citation

Clifton, Mark. When They Come from Space. New York: Macfadden Books, 1963.

MLA (8th ed.) Citation

Clifton, Mark. When They Come from Space. Macfadden Books, 1963.

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