Library of Congress. Copyright Office. Motion pictures and filmstrips, January-June 1970.
Cita Chicago (17th ed.)Library of Congress. Copyright Office. Motion Pictures and Filmstrips, January-June 1970.
Cita MLA (9th ed.)Library of Congress. Copyright Office. Motion Pictures and Filmstrips, January-June 1970.
Atenció: Aquestes cites poden no estar 100% correctes.