Haak, J. R. (1970). Goal determination and the under-graduate library. California University Library, Educational Resources Information Center.
Lua i Stíl Chicago (17ú heag.)Haak, John R. Goal Determination and the Under-graduate Library. San Diego : Washington: California University Library, Educational Resources Information Center, 1970.
Lua MLA (8ú heag.)Haak, John R. Goal Determination and the Under-graduate Library. California University Library, Educational Resources Information Center, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.