APA (7th ed.) Citation

Yorkey, R. C. (1984). New intercom (2nd edición.). Heinle & Heinle publishers.

Chicago Style (17th ed.) Citation

Yorkey, Richard C. New Intercom. 2nd edición. Boston: Heinle & Heinle publishers, 1984.

MLA (9th ed.) Citation

Yorkey, Richard C. New Intercom. 2nd edición. Heinle & Heinle publishers, 1984.

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