Zeitz, P. (2017). The art and craft of problem solving (Third edition.). John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Zeitz, Paul. The Art and Craft of Problem Solving. Third edition. Hoboken, NJ: John Wiley & Sons, 2017.
Lua MLA (8ú heag.)Zeitz, Paul. The Art and Craft of Problem Solving. Third edition. John Wiley & Sons, 2017.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.