Cita APA (7th ed.)

(1997). Web designer's guide to graphics: PNG, GIF, JPEG. Hayden Books.

Cita Chicago (17th ed.)

Web Designer's Guide to Graphics: PNG, GIF, JPEG. Indianapolis, IN: Hayden Books, 1997.

Cita MLA (9th ed.)

Web Designer's Guide to Graphics: PNG, GIF, JPEG. Hayden Books, 1997.