Dyfyniad APA

Erlandson, R. F. (2008). Universal and accessible design for products, services, and processes. CRC Press/Taylor & Francis Group.

Dyfyniad Arddull Chicago

Erlandson, Robert F. Universal and Accessible Design for Products, Services, and Processes. Boca Raton, Fla: CRC Press/Taylor & Francis Group, 2008.

Dyfyniad MLA

Erlandson, Robert F. Universal and Accessible Design for Products, Services, and Processes. CRC Press/Taylor & Francis Group, 2008.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.