Krug, Ronald S., author
Springer-Verlag, 1992
Buku Teks
Krug, Ronald S., author
Springer-Verlag, 1992
Buku Teks
Siegel, Sidney, author
McGraw-Hill , 1988
Buku Teks
Howell, David C., author
Thomson Higher Education, 2004
Buku Teks
Jaccard, James, author
Wadsworth, 1983
Buku Teks