Não informado. (1971). Journal of the College Science Teaching. National Science Teachers Association.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Journal of the College Science Teaching. Washington: National Science Teachers Association, 1971.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Journal of the College Science Teaching. National Science Teachers Association, 1971.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.