Carlson, Sune
Svenska Bokforlaget, 1964
Buku Teks
Swerdlow, Irving
Frederick A. Praeger, 1975
Buku Teks
by Dwight Waldo ... [et.al.]
Duke University Press, 1970
Buku Teks
Gant, George F.
University of Wisconsin Press, 1979
Buku Teks
Katz, Saul M.
University of Pittsburgh, 1965
Buku Teks