APA (7th ed.) Citation

Johnson, T., Robinson, C., & Boon, D. (2012). Questions. Maria de Alvear World Edition.

Chicago Style (17th ed.) Citation

Johnson, Tom, Carol Robinson, and Dante Boon. Questions. Köln: Maria de Alvear World Edition, 2012.

MLA (9th ed.) Citation

Johnson, Tom, et al. Questions. Maria de Alvear World Edition, 2012.