Evans, Mary
Prentice-Hall, 1949
Buku Teks
edited by Janice M. Bell, Wendy L. Watson, Lorraine M. right
Family Nursing Unit Publishing, 1990
Buku Teks SO
Donnelly, Daniel
Rockport Publishers, 1998
Buku Referensi
Howard, John R.
J.B. Lippincott, 1974
Buku Teks SO
Trade Policy Research Centre, 1984
Buku Teks