Cita APA (7a ed.)

Heinlein, R. A. (1990). The menace from Earth. Baen Publishing Enterprises.

Cita Chicago Style (17a ed.)

Heinlein, Robert Anson. The Menace from Earth. New York: Baen Publishing Enterprises, 1990.

Cita MLA (9a ed.)

Heinlein, Robert Anson. The Menace from Earth. Baen Publishing Enterprises, 1990.