General Certificate of Secondary Education & Suffolk County Council. (1987). Co-ordinated science lesson notes: Biology. Collins Educational.
Lua i Stíl Chicago (17ú heag.)General Certificate of Secondary Education agus Suffolk County Council. Co-ordinated Science Lesson Notes: Biology. London: Collins Educational, 1987.
Lua MLA (9ú heag.)General Certificate of Secondary Education agus Suffolk County Council. Co-ordinated Science Lesson Notes: Biology. Collins Educational, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.