Degenova, Mary Kay, author
McGraw-Hill, 2008
Buku Teks
edited by Maureen Leahey, Lorraine M. Wright
Springhouse, 1987
Buku Teks
Gross, Irma H., author
Appleton-Countury Crofts, 1954
Buku Teks
Diduck, Alison, author
Butterworth, 2003
Buku Teks
University Press, 1949
Buku Teks