APA (7th ed.) Citation

Gilbert, A. (1975). Don't open the door! White Lion Publishers.

Chicago Style (17th ed.) Citation

Gilbert, Anthony. Don't Open the Door! London: White Lion Publishers, 1975.

MLA (8th ed.) Citation

Gilbert, Anthony. Don't Open the Door! White Lion Publishers, 1975.

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