APA-referens

Rao, D. P. L. (1990). Energy conservation handbook (Ed.2.). Utility.

Chicago-stil citat

Rao, Diwakar P L. Energy Conservation Handbook. Ed.2. Seconderabad: Utility, 1990.

MLA-referens

Rao, Diwakar P L. Energy Conservation Handbook. Ed.2. Utility, 1990.