Cook, David I., author
International Textbook Company, 1961
Buku Teks
Singer, Ferdinand L., author
New York: Harper and Row, 1975
Buku Teks
Meriam, J. L. (James L.), author
John Wiley and Sons, 1978
Buku Teks
Meriam, J. L. (James L.), author
John Wiley and Sons, 1959
Buku Teks
Meriam, J. L. (James L.), author
John Wiley and Sons, 1978
Buku Teks