volume editors, Jan Howard and Anselm Strauss
John Wiley & Sons, 1975
Buku Teks
Birenbaum, Arnold
Allanheld, Osmun, 1981
Buku Teks
edited by A.A. Kaptein ... [and others]
Wiley, 1990
Buku Teks
Reynolds, Frank W.
Macmillan, 1967
Buku Teks
Routledge , 1997
Buku Teks