Effective guide to libraries & reference sources - Natividad, Evelyn A.; Marasigan, Ruben P.; de Castro, Elinore H.; Bilgera, Melchora Q.; Gatmaitan, Wilhelmina D.; Paragas, Remedios Q.; Pacson, Veronidia P.; Orendain, Maria A. (Manila : National Bookstore, 1987)
Bibliography: pages 244-245
Keywords: Libraries; Reference books