Flores, Ivan, author
Prentice-Hall, 1973
Buku Teks
Amadio, William, author
Mitchell Publishing, 1989
Buku Teks
Sage, Andrew P., author
Academic Press , 1971
Buku Teks
Amadio, William, author
Mitchell Publishing, 1989
Buku Teks
Fenves, Steven J., author
Prentice-Hall, 1967
Buku Teks