Não informado. (1960). Management Quarterly. National Rural Electric Cooperative Association.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Management Quarterly. Washington: National Rural Electric Cooperative Association, 1960.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Management Quarterly. National Rural Electric Cooperative Association, 1960.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.