edited by Amanda Gouws and Daiva Stasiulis
Routledge, 2014
Buku Teks SO
Bornstein, Robert F, author
Washington D.C, 2002
Buku Teks
Archer, John, author
Cambridge University Press, 2002
Buku Teks SO
Lips, Hilary M., author
McGraw-Hill, 2008
Buku Teks
Jacqueline Scott, Shirley Dex, Anke C. Plagnol, editor
Edward Elgar, 2012
Buku Teks