APA Style

Singer, F, M., Ellerton, N, F. (2015). Mathematical Problem Posing: From Research to Effective Practice . New York: Springer New York, NY.

MLA Style

Singer, Florence, Mihaela., Ellerton, Nerida, F.. "Mathematical Problem Posing: From Research to Effective Practice". New York: Springer New York, NY, 2015. Text.