Montgomery, Carla W., author
Wm. C. Brown , 1989
Buku Teks
Plummer, Charles C., author
WBC, 1991
Buku Teks
Montgomery, Carla W., author
McGraw-Hill, 2003
Buku Teks
Rogers, John J.W., author
Harper & Row, 1966
Buku Teks
Longwell, Chester R., author
John Wiley & Sons, 1969
Buku Teks