Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

Walsh, Clare autora, y Lindsay coautora Warwick. Gold: B1 Preliminary. New edition with 2020 exam specifications. Pearson, 2019.