Gaya APA

Rowling, J. (2018). Harry potter and the chamber of secrets : gryffindor (20 th Anniversarry). London: Bloomsbury Publishing Plc.

Gaya MLA

Rowling, J.K. "Harry potter and the chamber of secrets : gryffindor". 20 th Anniversarry London: Bloomsbury Publishing Plc, 2018. Text.