APA (7th ed.) Citation

Kachru, B. B. (1983). The other tongue: English across cultures. Pergamon Institute of English.

Chicago Style (17th ed.) Citation

Kachru, Braj B. The Other Tongue: English Across Cultures. New York [etc.]: Pergamon Institute of English, 1983.

MLA (9th ed.) Citation

Kachru, Braj B. The Other Tongue: English Across Cultures. Pergamon Institute of English, 1983.