Cita APA (7th ed.)

Berry, T. (1988). The dream of the earth. Sierra Club.

Cita Chicago (17th ed.)

Berry, Thomas. The Dream of the Earth. San Francisco: Sierra Club, 1988.

Cita MLA (9th ed.)

Berry, Thomas. The Dream of the Earth. Sierra Club, 1988.

Atenció: Aquestes cites poden no estar 100% correctes.