Não informado. University of Iowa studies in engineering. University of Iowa, College of Engineering.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. University of Iowa Studies in Engineering. Iowa City, Iowa: University of Iowa, College of Engineering.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. University of Iowa Studies in Engineering. University of Iowa, College of Engineering.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.