Cita APA (7th ed.)

Thompson, E. P., & Smith, D. (1987). Prospectus for a habitable planet. Penguin.

Cita Chicago (17th ed.)

Thompson, E. P., i Dan Smith. Prospectus for a Habitable Planet. Harmondsworth: Penguin, 1987.

Cita MLA (8th ed.)

Thompson, E. P., i Dan Smith. Prospectus for a Habitable Planet. Penguin, 1987.