Lindgren, Simon, author
Sage, 2017
Buku Teks
Michiel de Lange, Martijn de Waal, editors
Springer Nature, 2019
eBooks
Powell, Anastasia, author
Routledge, Taylor & Francis Group, 2018
Buku Teks
Burton, Graeme, author
McGraw-Hill, 2010
Buku Teks
Hodkinson, Paul, author
Sage Publications, 2011
Buku Teks