Byrd-Bredbenner, Carol, author
McGraw-Hill, 2013
Buku Teks
Hall, R.P.
Blaisdell Publishing, 1964
Buku Teks
Wilson, Eva, 1925-, author
John Wiley and Sons, 1967
Buku Teks
Whitney, Ellie, author
Wadsworth and Cengage Learning, 2013
Buku Teks
Fleck, Henrietta
Macmillan, 1966
Buku Teks