Cita APA (7a ed.)

Edge, J. (1999). Essentials of English language teaching (1st published, 6th impression.). Longman.

Cita Chicago Style (17a ed.)

Edge, Julian. Essentials of English Language Teaching. 1st published, 6th impression. London [etc.]: Longman, 1999.

Cita MLA (9a ed.)

Edge, Julian. Essentials of English Language Teaching. 1st published, 6th impression. Longman, 1999.