Não informado. (1937). The Science teacher. American Science Teachers Association.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. The Science Teacher. Normal, Ill: American Science Teachers Association, 1937.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. The Science Teacher. American Science Teachers Association, 1937.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.