Citazione Stile APA (7a Edizione)

(1971). Evaluation handbook (2nd ed.). Agency for International Development.

Citazione stile Chigago Style (17a edizione)

Evaluation Handbook. 2nd ed. Washington, D.C: Agency for International Development, 1971.

Citatione MLA (9a ed.)

Evaluation Handbook. 2nd ed. Agency for International Development, 1971.