National Conference on the Place of Biology in Education London, British social hygiene council, & Crowther, J. G. (1933). Biology in education: A handbook based on the proceedings of the National conference on the place of biology in education, organised by the British social hygiene council. W. Heinemann, ltd..
Chicago-referens (17:e uppl.)National Conference on the Place of Biology in Education London, British social hygiene council, och J. G. Crowther. Biology in Education: A Handbook Based on the Proceedings of the National Conference on the Place of Biology in Education, Organised by the British Social Hygiene Council. London: W. Heinemann, ltd., 1933.
MLA-referens (8:e uppl.)National Conference on the Place of Biology in Education London, et al. Biology in Education: A Handbook Based on the Proceedings of the National Conference on the Place of Biology in Education, Organised by the British Social Hygiene Council. W. Heinemann, ltd., 1933.