Bloomfield, Leonard, author
Holt, Rinehart and Winston, 1961
Buku Teks
Bush, Lewis
Tokyo News Service, Ltd., 1960
Buku Teks
Hodous, Lewis
Arthur Probstain, 1929
Buku Teks
Hanke, Lewis
D. Van Nostrand Company, 1959
Buku Teks
Mumford, Lewis, author
The literary Guild of America , 1929
Buku Teks