Gaya APA
Bhajanka, S., Citraningtyas, C, E. ([2015?]).
Purple turtle : friends forever = kura-kura ungu : teman selamanya .
Tanggerang:
ILM.
Gaya MLA
Bhajanka, Suvarna., Citraningtyas, Clara, Evi.
"Purple turtle : friends forever = kura-kura ungu : teman selamanya".
Tanggerang:
ILM,
[2015?].
Text.