Gaya APA

Orion, G, F., Dale, J, N. (1988). Pronouncing American English : Sounds, Stress, and Intonation . USA: Heinle \r Heinle Publishers.

Gaya MLA

Orion, Gertrude, F., Dale, Jean, N. "Pronouncing American English : Sounds, Stress, and Intonation". USA: Heinle \r Heinle Publishers, 1988. Text.