APA (7th ed.) Citation

Orion, G. F. (1988). Pronouncing American English: Sounds, stress, and intonation : answer key. Heinle & Heinle.

Chicago Style (17th ed.) Citation

Orion, Gertrude F. Pronouncing American English: Sounds, Stress, and Intonation : Answer Key. Boston: Heinle & Heinle, 1988.

MLA (9th ed.) Citation

Orion, Gertrude F. Pronouncing American English: Sounds, Stress, and Intonation : Answer Key. Heinle & Heinle, 1988.

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