Cita APA (7a ed.)

Zain Ahmed, A., & Zain Ahmed, A. (2012). Energy Conservation. IntechOpen.

Cita Chicago Style (17a ed.)

Zain Ahmed, Azni, y Azni Zain Ahmed. Energy Conservation. [Place of publication not identified]: IntechOpen, 2012.

Cita MLA (9a ed.)

Zain Ahmed, Azni, y Azni Zain Ahmed. Energy Conservation. IntechOpen, 2012.