Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.