Clark, R. C., & Lyons, C. C. (2004). Graphics for learning: Proven guidelines for planning, designing, and evaluating visuals in training materials. Pfeiffer.
Chicago-referens (17:e uppl.)Clark, Ruth Colvin, och Chopeta C. Lyons. Graphics for Learning: Proven Guidelines for Planning, Designing, and Evaluating Visuals in Training Materials. San Francisco, Calif: Pfeiffer, 2004.
MLA-referens (9:e uppl.)Clark, Ruth Colvin, och Chopeta C. Lyons. Graphics for Learning: Proven Guidelines for Planning, Designing, and Evaluating Visuals in Training Materials. Pfeiffer, 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.