Cita APA (7th ed.)
Lang, V. P. (1979). Principles of air conditioning (3th ed.). CBS Publishers.
Cita Chicago (17th ed.)
Lang, V. Paul. Principles of Air Conditioning. 3th ed. New Delhi: CBS Publishers, 1979.
Cita MLA (9th ed.)
Lang, V. Paul. Principles of Air Conditioning. 3th ed. CBS Publishers, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.