AMA membership Publications Division, 1986
Buku Teks
Rose, Peter I., foreword
Random House, 1964
Buku Teks
Rose, Jerome G.
The State University of New Jersey, 1974
Buku Teks
Curti, Merle
Harper & Brothers, 1951
Buku Teks
John Ferejohn, Jack N. Rakove, Jonathan Riley
Cambridge University Press, 2001
Buku Teks