Cita APA (7th ed.)

ISTED, G. H., & BRODERICK, V. (1990). The best toefl: Workbook. Addison-wesley pub.

Cita Chicago (17th ed.)

ISTED, George H., i Vincent BRODERICK. The Best Toefl: Workbook. California: Addison-wesley pub, 1990.

Cita MLA (9th ed.)

ISTED, George H., i Vincent BRODERICK. The Best Toefl: Workbook. Addison-wesley pub, 1990.