Yunus, H., S., Sutikno, (2003).Indonesian Journal Of Geography Vol.35 Tahun 2003 (Vol 35 No.1,2 2003).liberti,Yogyakarta:Published by the Faculty Of Geography Gaja Mada University Yogyakarta Indonesia.
Gaya MLA
Yunus, Hadi, Sabari., Sutikno, ."Indonesian Journal Of Geography Vol.35 Tahun 2003".Vol 35 No.1,2 2003liberti,Yogyakarta:Published by the Faculty Of Geography Gaja Mada University Yogyakarta Indonesia,2003.Koleksi Berkala.