Cita APA (7th ed.)

Koenig, B. (2007). Color workbook (Second edition.). Pearson Prentice Hall.

Cita Chicago (17th ed.)

Koenig, Becky. Color Workbook. Second edition. New Jersey: Pearson Prentice Hall, 2007.

Cita MLA (9th ed.)

Koenig, Becky. Color Workbook. Second edition. Pearson Prentice Hall, 2007.