APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Tottie, Gunnel. An Introduction to American English. Malden (Massachusetts) [etc.]: Blackwell, 2002.

MLA (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.