Greenes, C. E. (1972). Problem solving in the mathematics laboratory: How to do it. Prindle, Weber and Schmidt, Inc.
Lua i Stíl Chicago (17ú heag.)Greenes, Carole E. Problem Solving in the Mathematics Laboratory: How to Do It. Boston, Massachusetts: Prindle, Weber and Schmidt, Inc, 1972.
Lua MLA (9ú heag.)Greenes, Carole E. Problem Solving in the Mathematics Laboratory: How to Do It. Prindle, Weber and Schmidt, Inc, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.