Cita APA (7a ed.)

Liu, P. I. (1993). Introduction to energy and the environment. Van Nostrand.

Cita Chicago Style (17a ed.)

Liu, Paul Ih-fei. Introduction to Energy and the Environment. Nueva York: Van Nostrand, 1993.

Cita MLA (8a ed.)

Liu, Paul Ih-fei. Introduction to Energy and the Environment. Van Nostrand, 1993.