Blackwell, A., Naber, T., & Manin, G. J. (2004). English knowhow. Oxford University Press.
Cita Chicago (17th ed.)Blackwell, Angela, Therese Naber, i Gregory J. Manin. English Knowhow. New York: Oxford University Press, 2004.
Cita MLA (8th ed.)Blackwell, Angela, et al. English Knowhow. Oxford University Press, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.