Cita APA (7a ed.)

Frutiger, A., & Bluhm, A. (1989). Signs and symbols: Their design and meaning. Studio Editions.

Cita Chicago Style (17a ed.)

Frutiger, Adrian, y Andrew Bluhm. Signs and Symbols: Their Design and Meaning. London: Studio Editions, 1989.

Cita MLA (9a ed.)

Frutiger, Adrian, y Andrew Bluhm. Signs and Symbols: Their Design and Meaning. Studio Editions, 1989.