Cita APA (7th ed.)

Clark, R. C., & Lyons, C. C. (2004). Graphics for learning: Proven guidelines for planning, designing, and evaluating visuals in training materials. Pfeiffer.

Cita Chicago (17th ed.)

Clark, Ruth Colvin, i Chopeta C. Lyons. Graphics for Learning: Proven Guidelines for Planning, Designing, and Evaluating Visuals in Training Materials. San Francisco, Calif: Pfeiffer, 2004.

Cita MLA (9th ed.)

Clark, Ruth Colvin, i Chopeta C. Lyons. Graphics for Learning: Proven Guidelines for Planning, Designing, and Evaluating Visuals in Training Materials. Pfeiffer, 2004.