APA (7th ed.) Citation

Mason, J., Oliveira, H., & Boavida, A. M. (2012). Reasoning reasonably in mathematics.

Chicago Style (17th ed.) Citation

Mason, John, Hélia Oliveira, and Ana Maria Boavida. Reasoning Reasonably in Mathematics. 2012.

MLA (8th ed.) Citation

Mason, John, et al. Reasoning Reasonably in Mathematics. 2012.