Cita APA (7th ed.)

Mason, J., Graham, A., & Wilder, S. J. (2005). Developing thinking in algebra. Sage.

Cita Chicago (17th ed.)

Mason, John, Alan Graham, i Sue Johnston Wilder. Developing Thinking in Algebra. London : Open University in association with Paul Chapman ; Thousand Oaks, CA: Sage, 2005.

Cita MLA (9th ed.)

Mason, John, et al. Developing Thinking in Algebra. Sage, 2005.