Gaya APA
Cowell, C.
(2019).
The Wizards of Once : Knock Three Times (Ketuk Tiga Kali)
.
Jakarta:
Mahaka Publishing.
Gaya MLA
Cowell, Cressida.
"The Wizards of Once : Knock Three Times (Ketuk Tiga Kali)".
Jakarta:
Mahaka Publishing,
2019.
Text.