Não informado. (1990). Genetic Engineer and Biotechnologist. Carfax Publishing.
Lua i Stíl Chicago (17ú heag.)Não informado. Genetic Engineer and Biotechnologist. Oxfordshire, Inglaterra: Carfax Publishing, 1990.
Lua MLA (8ú heag.)Não informado. Genetic Engineer and Biotechnologist. Carfax Publishing, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.