Information sources in patents
edited by C.P. Ager
Bowker-Saur, 1992
Buku Referensi
Wiggins, Gary, 1943-
Chemical information sources
McGraw-Hill, 1991
Buku Teks SO
Holler, Frederick L.
Information sources of political science
ABC-Clio, 1981
Buku Teks
Ching-Chih, Chen
Scientific and technical information sources
MIT Press, 1977
Buku Teks SO
Chen, Ching-Chih
Scientific and technical information sources
MIT Press, 1977
Buku Referensi