Fischbach, Frances Talaska
J.B. Lippincott, 1996
Buku Teks SO
Fischbach, Frances Talaska
J.B.Lippincot, 1998
Buku Teks SO
Nettina, Sandra M.
Lippincott , 1997
Buku Teks SO
edited by George A. Hawkins
McGraw-Hill, 1968
Buku Teks SO
cordinating editor, Geoge A. Hawkins
McGraw-Hill, 1968
Buku Teks SO