edited by Barbara Walton Spradley
J.B. Lippincott , 1991
Buku Teks
Clark, Mary Jo, author
Appleton & Lange, 1999
Buku Teks
Helvie, Carl O., author
Sage, 1998
Buku Teks
Anderson, Elizabeth T., author
Lippincott , 2000
Buku Teks
Armentrout, Ginger
Appleton & Lange , 1998
Buku Teks