Cita APA (7th ed.)

Ferguson, C. A., & Heath, S. B. (1981). Language in the USA (1a. ed.). Cambridge University.

Cita Chicago (17th ed.)

Ferguson, Charles A., i Shirley Brice Heath. Language in the USA. 1a. ed. Cambridge: Cambridge University, 1981.

Cita MLA (9th ed.)

Ferguson, Charles A., i Shirley Brice Heath. Language in the USA. 1a. ed. Cambridge University, 1981.