Παραπομπή APA

Heumann, G. W. (1961). Magnetic control of industrial motors. Wiley.

Παραπομπή Chicago Style

Heumann, Gerhart W. Magnetic Control of Industrial Motors. New York: Wiley, 1961.

Παραπομπή MLA

Heumann, Gerhart W. Magnetic Control of Industrial Motors. Wiley, 1961.