Cita APA (7th ed.)

Dulan, S. (2007). GMAT Examination preparation. Pearson Education.

Cita Chicago (17th ed.)

Dulan, Steven. GMAT Examination Preparation. New Delhi: Pearson Education, 2007.

Cita MLA (9th ed.)

Dulan, Steven. GMAT Examination Preparation. Pearson Education, 2007.