Popham, W. J. (1972). An evaluation guidebook: A set of practical guidelines for the educational evaluator. Instructional Objectives Exchange.
Citazione stile Chigago Style (17a edizione)Popham, W. James. An Evaluation Guidebook: A Set of Practical Guidelines for the Educational Evaluator. Los Angeles, Calif: Instructional Objectives Exchange, 1972.
Citatione MLA (8a ed.)Popham, W. James. An Evaluation Guidebook: A Set of Practical Guidelines for the Educational Evaluator. Instructional Objectives Exchange, 1972.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.