University Microfilms International. (1988). Underground press collection: A guide to the microfilm collection : Hoover Institution supplement. UMI.
Chicago Style (17th ed.) CitationUniversity Microfilms International. Underground Press Collection: A Guide to the Microfilm Collection : Hoover Institution Supplement. Ann Arbor, Mich.: UMI, 1988.
Cita MLAUniversity Microfilms International. Underground Press Collection: A Guide to the Microfilm Collection : Hoover Institution Supplement. UMI, 1988.
Atenció: Aquestes cites poden no estar 100% correctes.