एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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