Weilbacher, William M.
Macmillan, 1981
Buku Teks
Kixer, William M.
John Wiley & Sons, 1986
Buku Teks
Kunstler, William M.
Oceana Publications, Inc, 1963
Buku Teks
Kunstler, William M.
William-Morrow and company, 1962
Buku Teks
Warbasse, James Peter
N.Y. Harper and Brothers Pub., 1936
Buku Teks