edited by Susan Ehrlich, Miriam Meyerhoff, and Janet Holmes
Wiley-Blackwell, 2017
Buku Teks SO
Sulistyowati Irianto
UNDP, 2009
Buku Referensi
Karen Ross, editor
[Wiley-Blackwell, Wiley-Blackwell], 2012
eBooks
Karen Ross, editor
Wiley-Blackweell, 2012
Buku Teks SO
edited by M. Thea Sinclair
Routledge, 1997
Buku Teks SO