APA (7th ed.) Citation

Menzel, D. H. (1953). Flying saucers. Harvard University Press.

Chicago Style (17th ed.) Citation

Menzel, Donald H. Flying Saucers. Cambridge: Harvard University Press, 1953.

MLA (8th ed.) Citation

Menzel, Donald H. Flying Saucers. Harvard University Press, 1953.

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