Totterdell, Anne, author
Facet, 2005
Buku Teks
Stueart, Robert D., author
Libraries Unlimited, 2002
Buku Teks
Reitz, Joan M., author
Libraries Unlimited, 2004
Buku Referensi
edited by Alice Gertzog
McFarland, 1989
Buku Teks
Joiner, Ida Arlene, author
Elsevier, 2018
Buku Teks