APA (7th ed.) Citation

Blass, L., & Hartmann, P. (2007). Quest 1: Listening and speaking (2nd ed.). Mc Graw-Hill.

Chicago Style (17th ed.) Citation

Blass, Laurie, and Pamela Hartmann. Quest 1: Listening and Speaking. 2nd ed. Singapore: Mc Graw-Hill, 2007.

MLA (9th ed.) Citation

Blass, Laurie, and Pamela Hartmann. Quest 1: Listening and Speaking. 2nd ed. Mc Graw-Hill, 2007.