1The Professional Board of IFLA. Medium-Term Programme 1992 ～ 1997 [J]. The Hague: IFLA Headquarters, 1992.
2The Professional Board of IFLA. Medium-Term Programme 1998 ～ 2001 [J]. The Hague: IFLA Headquarters, 1998.
3Dorothy Anderson. Universal Bibliography Control[A]. See:Allen Kent. Encyclopedia of Lidrary and Information Science [M]. Vol. 37, Supplement2:366～401. New York, Marcel Dekker,Inc, 1984.
