Wright, Melissa W, author
Routledge, 2006
Buku Teks
Moran, Marie, author
SAGE, 2015
Buku Teks
edited by Susanne Soederberg
Emerald, 2016
eBooks
edited by Daniel Bell and Irving Kristol
Basic Books, 1971
Buku Teks
Arnold, Thurman Wesley, author
Blue Ribbon Books, 1937
Buku Klasik