APA (7th ed.) Citation

Heinlein, R. A. (1958). Methuselah's children. Gnome Press.

Chicago Style (17th ed.) Citation

Heinlein, Robert A. Methuselah's Children. Hicksville, N.Y: Gnome Press, 1958.

MLA (9th ed.) Citation

Heinlein, Robert A. Methuselah's Children. Gnome Press, 1958.