Cita APA

Walsh, C., & Warwick, L. (2019). Gold: B1 preliminary (New edition with 2020 exam specifications.). Harlow, Essex: Pearson.

Citación estilo Chicago

Walsh, Clare, and Lindsay Warwick. Gold: B1 Preliminary. New edition with 2020 exam specifications. Harlow, Essex: Pearson, 2019.

Cita MLA

Walsh, Clare, and Lindsay Warwick. Gold: B1 Preliminary. New edition with 2020 exam specifications. Harlow, Essex: Pearson, 2019.