Johnson, Mina Marie, 1920-
South-Western Pub., 1982
Buku Teks
Smith, Read-Judith
South-Western, 2002
Buku Teks
Shepherd, Elizabeth J., 1960-
London, Facet
Buku Referensi
Shepherd, Elizabeth J., 1960-
Facet Publishing, 2003
Buku Referensi
Shepherd, Ellizabeth
Facet, 2003
Buku Teks