Cita APA (7a ed.)

Bright, J. A., & McGregor, G. P. (1971). Teaching English as a second language: Theory and techniques for the secondary stage (1st ed., new imp.). Longman.

Cita Chicago Style (17a ed.)

Bright, John Ambrose, y G. P. McGregor. Teaching English as a Second Language: Theory and Techniques for the Secondary Stage. 1st ed., new imp. London: Longman, 1971.

Cita MLA (9a ed.)

Bright, John Ambrose, y G. P. McGregor. Teaching English as a Second Language: Theory and Techniques for the Secondary Stage. 1st ed., new imp. Longman, 1971.