Lawson, T. E. (1974). Formative instructional product evaluation: Instruments & strategies. Educational Technology Publications.
Cita Chicago (17th ed.)Lawson, Tom E. Formative Instructional Product Evaluation: Instruments & Strategies. Englewood Cliffs, N.J.: Educational Technology Publications, 1974.
Cita MLA (8th ed.)Lawson, Tom E. Formative Instructional Product Evaluation: Instruments & Strategies. Educational Technology Publications, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.