Cita APA (7th ed.)

TOTTIE, G. (2002). An introduction to American English. Blackwell.

Cita Chicago (17th ed.)

TOTTIE, Gunnel. An Introduction to American English. Massachusetts: Blackwell, 2002.

Cita MLA (9th ed.)

TOTTIE, Gunnel. An Introduction to American English. Blackwell, 2002.