THARY, U. (1987). Pure biology. Hillview.
Lua i Stíl Chicago (17ú heag.)THARY, U.S. Pure Biology. Singapore: Hillview, 1987.
Lua MLA (9ú heag.)THARY, U.S. Pure Biology. Hillview, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.