APA (7th ed.) Citation

Twinkl. (2020). Harold's Worst Nightmare. Twinkl.

Chicago Style (17th ed.) Citation

Twinkl. Harold's Worst Nightmare. UK: Twinkl, 2020.

MLA (9th ed.) Citation

Twinkl. Harold's Worst Nightmare. Twinkl, 2020.

Warning: These citations may not always be 100% accurate.