Cita APA (7th ed.)

Tuma, D. T., & Reif, F. (1980). Problem solving and education: Issues in teaching and research. L. Erlbaum Associates.

Cita Chicago (17th ed.)

Tuma, David T., i F. Reif. Problem Solving and Education: Issues in Teaching and Research. Hillsdale, NJ: L. Erlbaum Associates, 1980.

Cita MLA (9th ed.)

Tuma, David T., i F. Reif. Problem Solving and Education: Issues in Teaching and Research. L. Erlbaum Associates, 1980.