APA

Holowaty L., Yeo C., . (2020). Trolls annual 2021. London: Egmont.

Chicago

Holowaty Lauren, Yeo Claire, . 2020. Trolls annual 2021. London: Egmont.

Harvard

Holowaty L., Yeo C., . (2020). Trolls annual 2021. London: Egmont.

MLA

Holowaty Lauren, Yeo Claire, . Trolls annual 2021. London: Egmont. 2020.