Freeman, Ruth B., author
W.B. Saunders, 1981
Buku Teks
edited by Robert D. Newcomb, Jerry L. Jolley
Charles C. Thomas, 1980
Buku Teks
Buku Teks
edited by Barbara Walton Spradley
J.B. Lippincott , 1991
Buku Teks
Freeman, Ruth B., author
W.B. Saunders, 1981
Buku Teks