Edward O. Wilson & Wilson, E. O. (1978). Life on earth (2nd ed.). Sinauer.
Cita Chicago (17th ed.)Edward O. Wilson i Edward O. Wilson. Life on Earth. 2nd ed. Sunderland, Mass: Sinauer, 1978.
Cita MLA (9th ed.)Edward O. Wilson i Edward O. Wilson. Life on Earth. 2nd ed. Sinauer, 1978.
Atenció: Aquestes cites poden no estar 100% correctes.