APA (7th ed.) Citation

Maurer, J., & Schoenberg, I. E. (1999). True colors: An EFL course for real communication: with workbook. Longman.

Chicago Style (17th ed.) Citation

Maurer, Jay, and Irene E. Schoenberg. True Colors: An EFL Course for Real Communication: With Workbook. New York, EUA: Longman, 1999.

MLA (9th ed.) Citation

Maurer, Jay, and Irene E. Schoenberg. True Colors: An EFL Course for Real Communication: With Workbook. Longman, 1999.