Orion, G. F. (1988). Pronouncing american english: Sounds, stress, and intonation. Newbury House.
Citazione stile Chigago Style (17a edizione)Orion, Gertrude F. Pronouncing American English: Sounds, Stress, and Intonation. Newbury House, 1988.
Citatione MLA (9a ed.)Orion, Gertrude F. Pronouncing American English: Sounds, Stress, and Intonation. Newbury House, 1988.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.