Παραπομπή APA

Steffen, K. G. (1965). High energy beam optics. Interscience Publishers.

Παραπομπή Chicago Style

Steffen, Klaus G. High Energy Beam Optics. New York: Interscience Publishers, 1965.

Παραπομπή MLA

Steffen, Klaus G. High Energy Beam Optics. Interscience Publishers, 1965.