Cita APA (7th ed.)
(1974). Earth Manual (2nd ed.). CBS Publishers & Distributors.
Cita Chicago (17th ed.)
Earth Manual. 2nd ed. New Delhi: CBS Publishers & Distributors, 1974.
Cita MLA (9th ed.)
Earth Manual. 2nd ed. CBS Publishers & Distributors, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.