Gaya APA

Smith.C.B,Parmenter.K.E, . (1981, 2016). Energy Management Principles application, benefits, savings (2nd Editon) (E-Book) . United States of America: Elsevier.

Gaya MLA

Smith.C.B,Parmenter.K.E, . "Energy Management Principles application, benefits, savings (2nd Editon) (E-Book)". United States of America: Elsevier, 1981, 2016. E-book.