Cita APA (7th ed.)

Watts, R. G. (2007). Global warming and the future of the earth. Morgan & Claypool Publishers.

Cita Chicago (17th ed.)

Watts, Robert G. Global Warming and the Future of the Earth. San Rafael, Calif: Morgan & Claypool Publishers, 2007.

Cita MLA (8th ed.)

Watts, Robert G. Global Warming and the Future of the Earth. Morgan & Claypool Publishers, 2007.

Atenció: Aquestes cites poden no estar 100% correctes.