Cita APA

Pile, L., & Williams, A. (2003). Progress to Vantage: Developing business english skills at intermediate level : student's book. Summertown: Summertown Publishing.

Citación estilo Chicago

Pile, Louise, and Anne Williams. Progress to Vantage: Developing Business English Skills At Intermediate Level : Student's Book. Summertown: Summertown Publishing, 2003.

Cita MLA

Pile, Louise, and Anne Williams. Progress to Vantage: Developing Business English Skills At Intermediate Level : Student's Book. Summertown: Summertown Publishing, 2003.