Gaya APA
RATNANINGSIH,Maria, ., SUBANDAR,Awal, . (2004).
Proceed.Natural Resourc.& Environmental Acc. (1).
:
BPFE Yogyakarta.
Gaya MLA
RATNANINGSIH,Maria, ., SUBANDAR,Awal, .
"Proceed.Natural Resourc.& Environmental Acc.".
1
:
BPFE Yogyakarta,
2004.
Buku.