American Library Association, Schimmelpfeng, R. H. e., & Cook, C. D. (1968). The Use of the Library of Congress classification; proceedings of the Institute on the use of the Library of Congress classification, New York City, July 7-9, 1966. Sponsored by the American Library Association, Resources and Technical Services Division, Cataloging and Classification Section. s.n.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)American Library Association, Richard H. ed Schimmelpfeng, và C. Donald Cook. The Use of the Library of Congress Classification; Proceedings of the Institute on the Use of the Library of Congress Classification, New York City, July 7-9, 1966. Sponsored by the American Library Association, Resources and Technical Services Division, Cataloging and Classification Section. Chicago: s.n, 1968.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)American Library Association, et al. The Use of the Library of Congress Classification; Proceedings of the Institute on the Use of the Library of Congress Classification, New York City, July 7-9, 1966. Sponsored by the American Library Association, Resources and Technical Services Division, Cataloging and Classification Section. s.n, 1968.