APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Liu, Paul I. Introduction to Energy and the Environment. New York: Van Nostrand Reinhold, 1993.

MLA (9th ed.) Citation

Liu, Paul I. Introduction to Energy and the Environment. Van Nostrand Reinhold, 1993.