Gaya APA

UMAMI, M. (2005). The Influence of Ecological Systems on Street Children`s Begging Behavior : a case study in Gajah Wong Ghetto Yogyakarta . Yogyakarta: Program Pascasarjana UIN Sunan Kalijaga.

Gaya MLA

UMAMI, Mashlihatul. "The Influence of Ecological Systems on Street Children`s Begging Behavior : a case study in Gajah Wong Ghetto Yogyakarta". Yogyakarta: Program Pascasarjana UIN Sunan Kalijaga, 2005. .