Gaya APA
widyastuti, palupi. (2011).
Pedoman Mutu Air Minum .
Jakarta:
EGC.
Gaya Chicago
widyastuti, palupi.
Pedoman Mutu Air Minum.
Jakarta:
EGC,
2011.
Text.
Gaya MLA
widyastuti, palupi.
Pedoman Mutu Air Minum.
Jakarta:
EGC,
2011.
Text.
Gaya Turabian
widyastuti, palupi.
Pedoman Mutu Air Minum.
Jakarta:
EGC,
2011.
Print.