Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (8th εκδ.)

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