Cita APA (7th ed.)

Coburn, J. W. (2007). Precalculus. McGraw-Hill Higher Education.

Cita Chicago (17th ed.)

Coburn, John W. Precalculus. Boston: McGraw-Hill Higher Education, 2007.

Cita MLA (9th ed.)

Coburn, John W. Precalculus. McGraw-Hill Higher Education, 2007.