Halpern, Manfred, author
Princeton University Press, 1963
Buku Teks
Andrain, Charles F., author
Macmillan, 1995
Buku Teks
edited by George Dalton
New York, 1971
Buku Teks
edited by Jon Bird ... [et al.]
Routledge, 1993
Buku Teks
Kahane, Adam, author
Berrett-Koehler Publishers, 2012
Buku Teks