Cita APA (7a ed.)

Center for Applied Linguistics, Shopen, T., & Williams, J. M. (1981). Style and variables in English. Winthrop.

Cita Chicago Style (17a ed.)

Center for Applied Linguistics, Timothy Shopen, y Joseph M. Williams. Style and Variables in English. Cambridge (Massachusetts): Winthrop, 1981.

Cita MLA (9a ed.)

Center for Applied Linguistics, et al. Style and Variables in English. Winthrop, 1981.