United States. Library of Congress Subject Cataloging Division. (1979). Classification. Class B, Subclasses B-BJ: Philosophy, Psychology (3rd ed.). The Library.
Cita Chicago (17th ed.)United States. Library of Congress Subject Cataloging Division. Classification. Class B, Subclasses B-BJ: Philosophy, Psychology. 3rd ed. Washington: The Library, 1979.
Cita MLA (9th ed.)United States. Library of Congress Subject Cataloging Division. Classification. Class B, Subclasses B-BJ: Philosophy, Psychology. 3rd ed. The Library, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.