Não informado. (1974). Studies in science education. University of Leeds, Center for Studies in Science Education.
Citação do estilo Chicago (17ª ed.)Não informado. Studies in Science Education. Leeds, Inglaterra: University of Leeds, Center for Studies in Science Education, 1974.
Citação MLA (8ª ed.)Não informado. Studies in Science Education. University of Leeds, Center for Studies in Science Education, 1974.
警告：這些引文格式不一定是100％准確.