Cita APA

Ur, P., & Thornbury, S. (2012). Vocabulary activities (1. ed., 1. reimpr.). Cambridge: Cambridge University Press.

Citación estilo Chicago

Ur, Penny, y Scott Thornbury. Vocabulary Activities. 1. ed., 1. reimpr. Cambridge: Cambridge University Press, 2012.

Cita MLA

Ur, Penny, y Scott Thornbury. Vocabulary Activities. 1. ed., 1. reimpr. Cambridge: Cambridge University Press, 2012.