Gaya APA

Webb, W., DeTemple, D. (2014). Combinatorial reasoning : an introduction to the art of counting . Hoboken, New Jersey: John Wiley & Sons.

Gaya MLA

Webb, William., DeTemple, Duane. "Combinatorial reasoning : an introduction to the art of counting". Hoboken, New Jersey: John Wiley & Sons, 2014. Text.