Gelder, Henk van
Thomas RAP, 1993
Buku Teks
Cohen, J.M. (John Michael), 1903-1989
Viking, 1993
Buku Referensi
Fleming H Revel Co., 1947
Buku Teks
J. K. Moorhead, Charles Lee, editor
J.M. Dent and Sons , 1932
Buku Referensi
Browning, D. C.
J.M. Dent , 1951
Buku Referensi