Hoffmann, Thomas R., author
Wadsworth, 1967
Buku Teks
Riggs, James L., author
John Wiley & Sons, 1970
Buku Teks
Riggs, James L., author
John Wiley & Sons, 1987
Buku Teks
Murdick, Robert G., author
Prentice-Hall, 1984
Buku Teks
Murdick, Robert G., author
Prentice-Hall, 1985
Buku Teks