APA (7th ed.) Citation

Seidlhofer, B. (2011). Understanding English as a lingua franca (1. publ.). Oxford Univ. Press.

Chicago Style (17th ed.) Citation

Seidlhofer, Barbara. Understanding English as a Lingua Franca. 1. publ. Oxford: Oxford Univ. Press, 2011.

MLA (9th ed.) Citation

Seidlhofer, Barbara. Understanding English as a Lingua Franca. 1. publ. Oxford Univ. Press, 2011.

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