Wood, Leigh N.
[Springer, Springer], 2012
eBooks
Lane, Saunders Mac
Springer, 1994
Buku Teks SO
Russel Sage Foundation, 2004
Buku Teks
Mimi Sheller and Kevin Hannam, editors
Routledge, Taylor & Francis Group, 2018
Buku Teks
edited by Ong Jin Hui, Chan Kwok Bun, and Chew Soon Beng
Prentince Hall, 1995
Buku Teks SO