APA

Blass L., . (2007). Quest 2: listening and speaking. New York: McGraw-Hill.

Chicago

Blass Laurie, . 2007. Quest 2: listening and speaking. New York: McGraw-Hill.

Harvard

Blass L., . (2007). Quest 2: listening and speaking. New York: McGraw-Hill.

MLA

Blass Laurie, . Quest 2: listening and speaking. New York: McGraw-Hill. 2007.