APA (7th ed.) Citation

Castro, A., & Margiotta, K. (2016). Gustav Gloom and the castle of fear. Grosset & Dunlap, an imprint of Penguin Random House.

Chicago Style (17th ed.) Citation

Castro, Adam-Troy, and Kristen Margiotta. Gustav Gloom and the Castle of Fear. New York, N.Y.: Grosset & Dunlap, an imprint of Penguin Random House, 2016.

MLA (8th ed.) Citation

Castro, Adam-Troy, and Kristen Margiotta. Gustav Gloom and the Castle of Fear. Grosset & Dunlap, an imprint of Penguin Random House, 2016.

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