APA (7th ed.) Citation

Hopf, A. L. (1965). Doctor to the galaxy ([1st ed.].). Norton.

Chicago Style (17th ed.) Citation

Hopf, Alice Lightner. Doctor to the Galaxy. [1st ed.]. New York: Norton, 1965.

MLA (9th ed.) Citation

Hopf, Alice Lightner. Doctor to the Galaxy. [1st ed.]. Norton, 1965.