Alexander, Linda Lewis
Jones & Bartlett Learning, 2014
Buku Teks
Published by B. Blackwell for the United Nations Industrial Development Organization, 1990
Buku Teks
edited by Linda M. Whiteford and Marilyn L. Poland
Westview Press, 1989
Buku Teks
Plenum Press, 1979
Buku Teks
Lawrence Erlbaum, 2004
Buku Teks SO