Cita APA (7a ed.)

Null, R. L. (2014). Universal design: Principles and models (Second edition.). CRC Press.

Cita Chicago Style (17a ed.)

Null, Roberta L. Universal Design: Principles and Models. Second edition. Boca Raton: CRC Press, 2014.

Cita MLA (8a ed.)

Null, Roberta L. Universal Design: Principles and Models. Second edition. CRC Press, 2014.