General Certificate of Secondary Education & Suffolk County Council. (1987). Co-ordinated science lesson notes: Biology. Collins Educational.
Chicago-Zitierstil (17. Ausg.)General Certificate of Secondary Education und Suffolk County Council. Co-ordinated Science Lesson Notes: Biology. London: Collins Educational, 1987.
MLA-Zitierstil (9. Ausg.)General Certificate of Secondary Education und Suffolk County Council. Co-ordinated Science Lesson Notes: Biology. Collins Educational, 1987.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.