APA (7th ed.) Citation

Porter, B. (1993). The Princess Troll. Publications International Ltd.

Chicago Style (17th ed.) Citation

Porter, Betty. The Princess Troll. Illinois: Publications International Ltd, 1993.

MLA (9th ed.) Citation

Porter, Betty. The Princess Troll. Publications International Ltd, 1993.

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