Cita APA (7th ed.)

Coman, M. J., & Heavers, K. L. (1999). Improve your study skills. NTC Learning Works.

Cita Chicago (17th ed.)

Coman, Marcia J., i Kathy L. Heavers. Improve Your Study Skills. Lincolnwood, Ill: NTC Learning Works, 1999.

Cita MLA (9th ed.)

Coman, Marcia J., i Kathy L. Heavers. Improve Your Study Skills. NTC Learning Works, 1999.