U.S. Library of Congress. General Reference and Bibliography Division, Mugridge, D. H., & McCrum, B. P. (1960). A guide to the study of the United States of America: Representative books reflecting the development of American life and thought. [s.n.].
Cita Chicago (17th ed.)U.S. Library of Congress. General Reference and Bibliography Division, Donald Henry Mugridge, i Blanche Pritchard McCrum. A Guide to the Study of the United States of America: Representative Books Reflecting the Development of American Life and Thought. Washington: [s.n.], 1960.
Cita MLA (9th ed.)U.S. Library of Congress. General Reference and Bibliography Division, et al. A Guide to the Study of the United States of America: Representative Books Reflecting the Development of American Life and Thought. [s.n.], 1960.