APA (7th ed.) Citation

Valvona Chris, Warwick, L., & Gil Vierma, M. (2015). Open Mind Advanced Workbook. Macmillan.

Chicago Style (17th ed.) Citation

Valvona Chris, Lindsay Warwick, and Mariela Gil Vierma. Open Mind Advanced Workbook. London: Macmillan, 2015.

MLA (9th ed.) Citation

Valvona Chris, et al. Open Mind Advanced Workbook. Macmillan, 2015.