Palen, J. John
McGraw-Hill, 1987
Buku Teks
edited by Alice O'Connor, Chris Tilly and Lawrence D. Bobo
Russel Sage Foundations, 2001
Buku Teks
edited by Mirjana Ristic and Sybille Frank
Routledge, 2019
Buku Teks
Macmillan , 1980
Buku Teks
Dubben, Nigel
Wiley-Blackwell, 2009
Buku Teks