Não informado. (1937). The Science teacher. American Science Teachers Association.
Cita Chicago Style (17a ed.)Não informado. The Science Teacher. Normal, Ill: American Science Teachers Association, 1937.
Cita MLA (8a ed.)Não informado. The Science Teacher. American Science Teachers Association, 1937.
Precaución: Estas citas no son 100% exactas.