APA

Walliams D., . (2023). Gangsta Granny Strikes Again!. London: HarperCollins Publishers.

Chicago

Walliams David, . 2023. Gangsta Granny Strikes Again!. London: HarperCollins Publishers.

Harvard

Walliams D., . (2023). Gangsta Granny Strikes Again!. London: HarperCollins Publishers.

MLA

Walliams David, . Gangsta Granny Strikes Again!. London: HarperCollins Publishers. 2023.