Não informado. (1974). Studies in science education. University of Leeds, Center for Studies in Science Education.
Chicago-Zitierstil (17. Ausg.)Não informado. Studies in Science Education. Leeds, Inglaterra: University of Leeds, Center for Studies in Science Education, 1974.
MLA-Zitierstil (8. Ausg.)Não informado. Studies in Science Education. University of Leeds, Center for Studies in Science Education, 1974.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.