edited by Ellen M. Codlin
Aslib, 1984
Buku Referensi
Wiggins, Gary, 1943-, author
McGraw-Hill, 1991
Buku Teks
edited by C.P. Ager
Bowker-Saur, 1992
Buku Referensi
Ching-Chih, Chen, author
MIT Press, 1977
Buku Teks
Holler, Frederick L., author
ABC-Clio, 1981
Buku Teks