APA-referens (7:e uppl.)

RAI G D. (2016). NON CONVENTIONAL SOURCES OF ENERGY (5TH ED.). KHANNA PUBLISHERS.

Chicago-referens (17:e uppl.)

RAI G D. NON CONVENTIONAL SOURCES OF ENERGY. 5TH ED. NEW DELHI: KHANNA PUBLISHERS, 2016.

MLA-referens (9:e uppl.)

RAI G D. NON CONVENTIONAL SOURCES OF ENERGY. 5TH ED. KHANNA PUBLISHERS, 2016.