Cita APA

 Twidell, J. (2015).  Renewable energy resources.  Routledge, Taylor & Francis Group.

Chicago Style Citation

 Twidell, John.  Renewable Energy Resources.  Routledge, Taylor & Francis Group, 2015.

Cita MLA

 Twidell, John.  Renewable Energy Resources.  Routledge, Taylor & Francis Group, 2015.

Atenció: Aquestes cites poden no estar 100% correctes.