Varley H. Paul
Columbia Univ press, 1972
Buku Teks
Masaaki Kosaka ... [and others]
Toyo Bunko, 1969
Buku Teks
Varley, H. Paul
Praegar Publisher , 1973
Buku Teks
Ellwood, Robert S. Jr
Wardsworth, 1980
Buku Teks
Wallbank, T. Walter, author
Scott, Foresman, 1965
Buku Teks