Cita APA (7th ed.)

Weiss, C. H. (1972). Evaluation research : methods for assessing: Program effectiveness. Prentice-Hall.

Cita Chicago (17th ed.)

Weiss, Carol H. Evaluation Research : Methods for Assessing: Program Effectiveness. Englewood Cliffs., N.J.: Prentice-Hall, 1972.

Cita MLA (9th ed.)

Weiss, Carol H. Evaluation Research : Methods for Assessing: Program Effectiveness. Prentice-Hall, 1972.