Morton, Joyce
Prentice-Hall, 1998
Buku Teks
Oliverio, Mary Ellen, 1926-
South Western Cengage Learning, 2013
Buku Teks
Fruehling, Rosemary T.
McGraw-Hill, 1987
Buku Teks
edited by Sharon Fillingham and Jean Douglas
Bailliere Tindall , 2000
Buku Teks
Briggs, Leslie J.
Englewood Cliffs , 1981
Buku Teks