Παραπομπή APA

Norwood, J. (1976). Twentieth century physics. Prentice-Hall.

Παραπομπή Chicago Style

Norwood, Joseph. Twentieth Century Physics. New Jersey: Prentice-Hall, 1976.

Παραπομπή MLA

Norwood, Joseph. Twentieth Century Physics. Prentice-Hall, 1976.