Παραπομπή APA

Houghton J. J. & Smith, S. D. (1966). Infra-red physics, eng.

Παραπομπή Chicago Style

Houghton J. J. και S. D. Smith. Infra-red Physics, Eng. 1966.

Παραπομπή MLA

Houghton J. J. και S. D. Smith. Infra-red Physics, Eng. 1966.