Gaya APA
11, S, K, P.
(2005).
Kartini 21 April 2005 SD Kristen Petra 11
.
SURABAYA:
SD Kristen Petra 11.
Gaya MLA
11, SD, Kristen, Petra.
"Kartini 21 April 2005 SD Kristen Petra 11".
SURABAYA:
SD Kristen Petra 11,
2005.
CD-ROM.