Wilson, Eva, 1925-
John Wiley & Sons, 1967
Buku Teks
Whitney, Ellie
Wadsworth and Cengage Learning, 2013
Buku Teks
Wardlaw, Gordon M., 1912-1989
McGraw-Hill, 2004
Buku Teks
Fleck, Henrietta
Macmillan, 1966
Buku Teks
Beal, Virginia A.
Macmillan, 1986
Buku Teks