Cita APA (7a ed.)

Modley, R. (1976). Handbook of pictorial symbols: 3,250 examples from international sources. Dover.

Cita Chicago Style (17a ed.)

Modley, Rudolf. Handbook of Pictorial Symbols: 3,250 Examples from International Sources. New York: Dover, 1976.

Cita MLA (9a ed.)

Modley, Rudolf. Handbook of Pictorial Symbols: 3,250 Examples from International Sources. Dover, 1976.