Block, Mervin, author
Sage, 2012
Buku Teks
Beaty, Wayne H., editor
McGraw-Hill Publishing Company, 1990
Buku Referensi
edited by A.J. Walford
Library Association, 1981
Buku Referensi
Joreskog, Karl G., author
Scientific Software International Inc., 1996
Buku Teks
Hogan, Thom, author
[Publisher not identified], 1981
Buku Teks