Não informado. (1978). New Directions for Evaluation. Jossey-Bass.
Lua i Stíl Chicago (17ú heag.)Não informado. New Directions for Evaluation. San Francisco, Calif: Jossey-Bass, 1978.
Lua MLA (8ú heag.)Não informado. New Directions for Evaluation. Jossey-Bass, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.