Budi Susanto, author
Kanisius , 2005
Buku Teks
Corbey, Raymond, author
KITLV Press, 2010
Buku Teks
Korean Society of welfare for the aged, {s.a}
Majalah, Jurnal, Buletin
Wiley-Blackwell, 2010
eBooks
Australia : University of Sydney
Majalah, Jurnal, Buletin