Cita APA (7a ed.)

Modley, R., & Myers, W. R. (1976). Handbook of pictorical symbols: 3.250 examples from international sources. Dover.

Cita Chicago Style (17a ed.)

Modley, Rudolf, y William R. Myers. Handbook of Pictorical Symbols: 3.250 Examples from International Sources. New York: Dover, 1976.

Cita MLA (9a ed.)

Modley, Rudolf, y William R. Myers. Handbook of Pictorical Symbols: 3.250 Examples from International Sources. Dover, 1976.