Gaya APA
Petra, P. ().
Dokumentasi Video Studi Banding SD di Singapore : Science Centre River Valley Primary School .
SURABAYA:
PPPK Petra.
Gaya MLA
Petra, PPPK.
"Dokumentasi Video Studi Banding SD di Singapore : Science Centre River Valley Primary School".
SURABAYA:
PPPK Petra,
.
CD-ROM.