Wolfe, Gerard R.
New York: a guide to the metropolis
McGraw-Hill, 1994
Buku Referensi
Williams, Norma
The new guide to women's health
Tiger Books International, 1990
Buku Referensi
Ross, Susan Deller
The rights of women : The basic aclu guide to a woman`s rights
Avon Books, 1973
Buku Teks
The State of worker protections in the United States: Unregulated work in New York City
Artikel Jurnal
New Mexico; a guide to the colorful State
Hastings House , 1953
Buku Teks SO