Gilluly, James, author
W.H. Freeman, 1959
Buku Teks
Lange, Oktavii Konstantinovich, 1883-1975, author
Foreign Languages Publishing House , 196?
Buku Teks
Montgomery, Carla W., author
Wm. C. Brown , 1989
Buku Teks
Rogers, John J.W., author
Harper & Row, 1966
Buku Teks
Longwell, Chester R., author
John Wiley & Sons, 1969
Buku Teks