Cita APA

Williams, A., & Wood, I. (1999). Pass Cambridge BEC 1: Teacher's guide (rev. ed.). Summertown: Summertown Publishing.

Citación estilo Chicago

Williams, Anne, and Ian Wood. Pass Cambridge BEC 1: Teacher's Guide. rev. ed. Summertown: Summertown Publishing, 1999.

Cita MLA

Williams, Anne, and Ian Wood. Pass Cambridge BEC 1: Teacher's Guide. rev. ed. Summertown: Summertown Publishing, 1999.