Sackheim, George I., author
Macmillan, 1968
Buku Teks
Smith, Janice G., author
McGraw-Hill, 2015
Buku Teks
Smith, janice gorzynski, author
McGraw-Hill, 2013
Buku Teks
Dodd, R.E.
Elsevier, 1957
Buku Teks
Timberlake, Karen C., author
Pearson Benjamin Cummings, 2007
Buku Teks