APA Citation

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

Chicago Style Citation

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

MLA Citation

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

Warning: These citations may not always be 100% accurate.