Cita APA (7a ed.)

Keeney, B. P., & Foerster, H. v. (1983). Aesthetics of change. Guilford.

Cita Chicago Style (17a ed.)

Keeney, Bradford P., y Heinz von Foerster. Aesthetics of Change. New York [etc.]: Guilford, 1983.

Cita MLA (9a ed.)

Keeney, Bradford P., y Heinz von Foerster. Aesthetics of Change. Guilford, 1983.