Não informado. (1946). McGraw Hill digest: Engineering, industry, science, business. McGraw-Hill Publications.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. McGraw Hill Digest: Engineering, Industry, Science, Business. New York: McGraw-Hill Publications, 1946.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. McGraw Hill Digest: Engineering, Industry, Science, Business. McGraw-Hill Publications, 1946.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.