APA (7th ed.) Citation

Willett, C. S. (1974). Introduction to gas lasers: population inversion mechanisms: With emphasis on selective excitation processes. Pergamon Press.

Chicago Style (17th ed.) Citation

Willett, Colin S. Introduction to Gas Lasers: Population Inversion Mechanisms: With Emphasis on Selective Excitation Processes. Oxford: Pergamon Press, 1974.

MLA (8th ed.) Citation

Willett, Colin S. Introduction to Gas Lasers: Population Inversion Mechanisms: With Emphasis on Selective Excitation Processes. Pergamon Press, 1974.