Cita APA (7a ed.)
Heller, S., & Pettit, E. Graphic Design Time Line: A Century of Design Milestones. Allworth.
Cita estilo Chicago (17a ed.)
Heller, Steven, y Elinor Pettit. Graphic Design Time Line: A Century of Design Milestones. Nueva York, EUA: Allworth.
Cita MLA (9a ed.)
Heller, Steven, y Elinor Pettit. Graphic Design Time Line: A Century of Design Milestones. Allworth.
Precaución: Estas citas no son 100% exactas.