Engineers Society of Western Pennsylvania. (1930). Pittsburgh: Commemorating the fiftieth anniversary of the Engineers' Society of Western Pennsylvania ; [1880 - 1930]. Cramer Printing & Publishing Company.
Chicago-Zitierstil (17. Ausg.)Engineers Society of Western Pennsylvania. Pittsburgh: Commemorating the Fiftieth Anniversary of the Engineers' Society of Western Pennsylvania ; [1880 - 1930]. Pittsburgh: Cramer Printing & Publishing Company, 1930.
MLA-Zitierstil (9. Ausg.)Engineers Society of Western Pennsylvania. Pittsburgh: Commemorating the Fiftieth Anniversary of the Engineers' Society of Western Pennsylvania ; [1880 - 1930]. Cramer Printing & Publishing Company, 1930.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.