Kinnane, Garry
George Johnston: a biography / Garry Kinnane
Nelson, 1986
 Buku Teks
The dictionary of national biography, founded in 1882 by George Smith
edited by Leslie Stephen, Sidney Lee
Oxford University Press, 1950
 Buku Referensi
Terry, George Robert
Supervision /George R. Terry
Richard D. Irwin, 1978
 Buku Teks
Meyer, Robert R.
George Borrow / Robert R. Meyers
Twayne's, 1966
 Buku Teks
Price, George R.
Thomas Dekker / by George R. Price
Twayne , 1969
 Buku Teks