Cita APA (7a ed.)

Beer, G. (2007). WEB design index by content .03. Pepin Press.

Cita Chicago Style (17a ed.)

Beer, Günter. WEB Design Index by Content .03. Amsterdam: Pepin Press, 2007.

Cita MLA (8a ed.)

Beer, Günter. WEB Design Index by Content .03. Pepin Press, 2007.