Larson, L. C. (1983). Problem-solving through problems. Springer-Verlag.
Lua i Stíl Chicago (17ú heag.)Larson, Loren C. Problem-solving Through Problems. New York: Springer-Verlag, 1983.
Lua MLA (8ú heag.)Larson, Loren C. Problem-solving Through Problems. Springer-Verlag, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.