edited by Fred McKinney
Macmillan, 1971
Buku Teks
Bass, Bernard M., editor
Allyn and Bacon, 1979
Buku Teks
Nicolson, Paula
MacMillan Education, 1986
Buku Teks
Quinn, Virginia Nichols
McGraw-Hill, 1995
Buku Teks
Gilmer, B. von Haller (Beverly von Haller), 1909-1994
McGraw-Hill, 1966
Buku Teks