Marius, Richard, author
McGraw-Hill, 1988
Buku Teks
Ironside, Virginia, author
Sheldon Press, 1995
Buku Referensi
Corwin, Elizabeth J., author
Lippincott, 1996
Buku Referensi
Loftness, Robert L., author
Van Nostrand Reinhold, 1984
Buku Referensi
edited by Ita M. Doyle
Lippincott Williams & Wilkins , 2008
Buku Teks