APA Citation

Henderson, E. C. T. a. S. C. (1972). Pronunciation drills for learners of English. English Language Services.

Chicago Style Citation

Henderson, Edith Crowell Trager and Sara Cook. Pronunciation Drills for Learners of English. English Language Services, 1972.

MLA Citation

Henderson, Edith Crowell Trager and Sara Cook. Pronunciation Drills for Learners of English. English Language Services, 1972.

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