Cita APA (7a ed.)

Gramley, S., & Pätzold, K. (1992). A survey of modern English. Routledge.

Cita Chicago Style (17a ed.)

Gramley, Stephan, y Kurt-Michael Pätzold. A Survey of Modern English. London [etc.]: Routledge, 1992.

Cita MLA (9a ed.)

Gramley, Stephan, y Kurt-Michael Pätzold. A Survey of Modern English. Routledge, 1992.