(1983). List of serials indexed for online users / (U.S.) National Library of Medicine.
Cita Chicago (17th ed.)List of Serials Indexed for Online Users / (U.S.) National Library of Medicine. 1983.
Cita MLA (9th ed.)List of Serials Indexed for Online Users / (U.S.) National Library of Medicine. 1983.
Atenció: Aquestes cites poden no estar 100% correctes.