Cita APA (7th ed.)

Swan, M. (1978). Spectrum: An anthology of english varieties for intermediate and more advanced students (1a. ed.). Cambridge University.

Cita Chicago (17th ed.)

Swan, Michael. Spectrum: An Anthology of English Varieties for Intermediate and More Advanced Students. 1a. ed. Cambridge: Cambridge University, 1978.

Cita MLA (9th ed.)

Swan, Michael. Spectrum: An Anthology of English Varieties for Intermediate and More Advanced Students. 1a. ed. Cambridge University, 1978.