Gaya APA

Reba, M, A., Shier, D, R. (2015). Puzzles, paradoxes, and problem solving : an introduction to mathematical thinking . Boca Raton, Florida: CRC Press.

Gaya MLA

Reba, Marilyn, A.., Shier, Douglas, R.. "Puzzles, paradoxes, and problem solving : an introduction to mathematical thinking". Boca Raton, Florida: CRC Press, 2015. Text.