Cita APA (7th ed.)

Wolfram, W., & Johnson, R. (1982). Phonological analysis focus on American English (1a. ed.). Prentice Hall.

Cita Chicago (17th ed.)

Wolfram, Walt, i Robert Johnson. Phonological Analysis Focus on American English. 1a. ed. Upper Saddle River: Prentice Hall, 1982.

Cita MLA (9th ed.)

Wolfram, Walt, i Robert Johnson. Phonological Analysis Focus on American English. 1a. ed. Prentice Hall, 1982.