Cita APA

Protzen, J., & Harris, D. J. (2010). The Universe of Design: Horst Rittel's Theories of Design and Planning. London: Routledge.

Citación estilo Chicago

Protzen, Jean-Pierre, y David J. Harris. The Universe of Design: Horst Rittel's Theories of Design and Planning. London: Routledge, 2010.

Cita MLA

Protzen, Jean-Pierre, y David J. Harris. The Universe of Design: Horst Rittel's Theories of Design and Planning. London: Routledge, 2010.