Library of Congress & Vollbehr, O. H. F. (1930). Exhibit of books printed during 15th century and known as incunabula, selected from Vollbehr collection purchased by Act of Congress, 1930; list of books. U.S. GPO.
Chicago Style (17th ed.) CitationLibrary of Congress and Otto H. F. Vollbehr. Exhibit of Books Printed During 15th Century and Known as Incunabula, Selected from Vollbehr Collection Purchased by Act of Congress, 1930; List of Books. Washington: U.S. GPO, 1930.
MLA (9th ed.) CitationLibrary of Congress and Otto H. F. Vollbehr. Exhibit of Books Printed During 15th Century and Known as Incunabula, Selected from Vollbehr Collection Purchased by Act of Congress, 1930; List of Books. U.S. GPO, 1930.
Warning: These citations may not always be 100% accurate.