Gaya APA
Cowell, C.
(2020).
Si Kembar Treetop : Petualangan di Hutan Belantara
.
London:
Hodder Childrens Books.
Gaya MLA
Cowell, Cressida.
"Si Kembar Treetop : Petualangan di Hutan Belantara".
London:
Hodder Childrens Books,
2020.
Text.