Eisman, L., & Tanzer, C. Biology and Human progress (3a ed.).
Lua i Stíl Chicago (17ú heag.)Eisman, Louis, agus Charles Tanzer. Biology and Human Progress. 3a ed.
Lua MLA (8ú heag.)Eisman, Louis, agus Charles Tanzer. Biology and Human Progress. 3a ed.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.