APA Style
Wulandari, S., Yulianawati, .
(2009).
Ekosistem Perairan
.
Semarang:
PT Sindur Press.
MLA Style
Wulandari, S.., Yulianawati, .
"Ekosistem Perairan".
Semarang:
PT Sindur Press,
2009.
Text.