Gaya APA
Cowell, C.
(2020).
Si Kembar Treetop : Si Kembar Mengamati Ikan Paus
.
China:
Hodder Childrens Books.
Gaya MLA
Cowell, Cressida.
"Si Kembar Treetop : Si Kembar Mengamati Ikan Paus".
China:
Hodder Childrens Books,
2020.
Text.