APA (7th ed.) Citation

Yorkey, R. C. (1984). New InterCom: Workbook (2nd ed.). Heinle and Heinle.

Chicago Style (17th ed.) Citation

Yorkey, Richard C. New InterCom: Workbook. 2nd ed. Boston: Heinle and Heinle, 1984.

MLA (9th ed.) Citation

Yorkey, Richard C. New InterCom: Workbook. 2nd ed. Heinle and Heinle, 1984.

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