Garvey, George E., author
Greenwood Press, 1990
Buku Teks
edited by Werner Sichel
Ann Arbor, 1970
Buku Teks
Gellhorn, Ernest, author
West , 1994
Buku Teks
Gellhorn, Ernest, author
St.paul Minn, 1986
Buku Teks
Gellhorn, Ernest, author
West, 2004
Buku Teks