APA Style
Widyastuti, P., Apriningsih, .
(2011).
Pedoman Mutu Air Minum
(
3)
.
Jakarta:
EGC.
MLA Style
Widyastuti, Palupi., Apriningsih, .
"Pedoman Mutu Air Minum".
3
Jakarta:
EGC,
2011.
TLM.