(1990). Laboratory Manual To Accompany Essentials Of Biology / Hopson, Wessells. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Laboratory Manual To Accompany Essentials Of Biology / Hopson, Wessells. McGraw-Hill, 1990.
Lua MLA (8ú heag.)Laboratory Manual To Accompany Essentials Of Biology / Hopson, Wessells. McGraw-Hill, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.