Não informado. (1971). International journal of continuing education and training. Baywood Publishing.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. International Journal of Continuing Education and Training. Farmingdale, NY: Baywood Publishing, 1971.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. International Journal of Continuing Education and Training. Baywood Publishing, 1971.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.