Bleyden, P., & Levin, B. S. (1940). Guide to the manuscript collections in the Historical society of Pennsylvania. Philadelphia: The Historical society of Pennsylvania.
Chicago Style CitationBleyden, Paul,, and Bernard S. Levin. Guide to the Manuscript Collections in the Historical Society of Pennsylvania. Philadelphia: The Historical society of Pennsylvania, 1940.
MLA CitationBleyden, Paul,, and Bernard S. Levin. Guide to the Manuscript Collections in the Historical Society of Pennsylvania. Philadelphia: The Historical society of Pennsylvania, 1940.