Holzberlein, Deanne
Haworth Press, 1986
Buku Referensi
Bowers, Fredson, author
St. Paul's Bibliographies, 1986
Buku Teks
Mortimer, Mary, author
TotalRecall Publications, 2007
Buku Teks
Lazarinis, Fotis, author
Chandos, 2015
eBooks
Procter, Margaret, author
Gower, 2000
Buku Teks