Não informado. (1948). Midwest Engineer. Western Society of Engineers.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Midwest Engineer. Chicago, Ill: Western Society of Engineers, 1948.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Midwest Engineer. Western Society of Engineers, 1948.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.