Popham, W. J. (1973). Evaluating instruction. Prentice-Hall.
Cita Chicago (17th ed.)Popham, W. James. Evaluating Instruction. Englewood Cliffs, N.J.: Prentice-Hall, 1973.
Cita MLA (8th ed.)Popham, W. James. Evaluating Instruction. Prentice-Hall, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.