Não informado. Mechanical Engineering Report. National Research Council, Division of Mechanical Engineering.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Mechanical Engineering Report. Ottawa: National Research Council, Division of Mechanical Engineering.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Mechanical Engineering Report. National Research Council, Division of Mechanical Engineering.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.