Cita APA (7th ed.)

Abdullah, R., & Hubner, R. (2006). Pictograms, icons and signs: A guide to information graphics. Thames and Hudson.

Cita Chicago (17th ed.)

Abdullah, Rayan, i Roger Hubner. Pictograms, Icons and Signs: A Guide to Information Graphics. Londres: Thames and Hudson, 2006.

Cita MLA (9th ed.)

Abdullah, Rayan, i Roger Hubner. Pictograms, Icons and Signs: A Guide to Information Graphics. Thames and Hudson, 2006.