APA (7th ed.) Citation

Johansen, B. E. (2006). Global warming in the 21st century. Praeger Publishers.

Chicago Style (17th ed.) Citation

Johansen, Bruce E. Global Warming in the 21st Century. Westport, Conn.: Praeger Publishers, 2006.

MLA (9th ed.) Citation

Johansen, Bruce E. Global Warming in the 21st Century. Praeger Publishers, 2006.