Johnson, Earl S.
Macmillan, 1956
Buku Teks
edited by R. Meurig Evans
Macmillan, 1975
Buku Teks
edited by Bruno Stein and S. M. Miller
Aldine Publishing, 1973
Buku Teks
Midgley, James
Sage, 2014
Buku Teks
Smalley, Ruth Elizabeth
Columbia University Press, 1971
Buku Teks