Pennington, S. (2000). Introduction to genetics. Blackwell Science.
Lua i Stíl Chicago (17ú heag.)Pennington, Sandra. Introduction to Genetics. Malden, Mass: Blackwell Science, 2000.
Lua MLA (9ú heag.)Pennington, Sandra. Introduction to Genetics. Blackwell Science, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.