Sorenson, S. (1999). The research paper: A contemporary approach. Amsco School Publications.
Lua i Stíl Chicago (17ú heag.)Sorenson, Sharon. The Research Paper: A Contemporary Approach. New York: Amsco School Publications, 1999.
Lua MLA (8ú heag.)Sorenson, Sharon. The Research Paper: A Contemporary Approach. Amsco School Publications, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.