Freeman, Ruth B., author
W.B. Saunders , 1969
Buku Teks
Gardner, Mary Sewall, author
Macmillan, 1963
Buku Teks
Maurer, Frances A., author
Elsevier Saunders, 2013
Buku Teks
Spradley, Barbara Walton, author
Little, Brown , 1985
Buku Teks
Bailliere Tindall, 1996
Buku Teks