Dudewicz, Edward J., author
American Sciences Press, 1989
Buku Teks
Roussas, George G., author
Academic Press, 2015
eBooks
Canavos, George C., author
Little, Brown, 1984
Buku Teks
Mendenhall, William, author
Wadsworth , 1967
Buku Teks
Mendenhall, William, author
Wadsworth, 1969
Buku Teks