(1983). Study in the use of behavioral objectives, A.
Lua i Stíl Chicago (17ú heag.)Study in the Use of Behavioral Objectives, A. 1983.
Lua MLA (9ú heag.)Study in the Use of Behavioral Objectives, A. 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.