Citazione Stile APA (7a Edizione)

Berk, R. A. Educational evaluation methodology: The state of the art. s.n.].

Citazione stile Chigago Style (17a edizione)

Berk, Ronald A. Educational Evaluation Methodology: The State of the Art. [S.l: s.n.].

Citatione MLA (9a ed.)

Berk, Ronald A. Educational Evaluation Methodology: The State of the Art. s.n.].