APA (7th ed.) Citation

Alexander, L. G. (1977). New Concept English. Practice and progress. Longman.

Chicago Style (17th ed.) Citation

Alexander, L. G. New Concept English. Practice and Progress. Londres: Longman, 1977.

MLA (9th ed.) Citation

Alexander, L. G. New Concept English. Practice and Progress. Longman, 1977.

Warning: These citations may not always be 100% accurate.