Não informado. (1971). K-eight: Learning through media. North American Publishing.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. K-eight: Learning Through Media. Philadelphia, Pa: North American Publishing, 1971.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. K-eight: Learning Through Media. North American Publishing, 1971.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.