Cita APA (7th ed.)

Sklar, J., & Farkas, D. (2009). Principles of Web design (4th ed.). Course Technology, Cengage Learning.

Cita Chicago (17th ed.)

Sklar, Joel, i David Farkas. Principles of Web Design. 4th ed. Australia: Course Technology, Cengage Learning, 2009.

Cita MLA (9th ed.)

Sklar, Joel, i David Farkas. Principles of Web Design. 4th ed. Course Technology, Cengage Learning, 2009.