APA (7th ed.) Citation

Gassenheimer, L. (2007). Perfect portion: How to eat your favourite foods and still lose weight. Dorling Kindersley Limited.

Chicago Style (17th ed.) Citation

Gassenheimer, Linda. Perfect Portion: How to Eat Your Favourite Foods and Still Lose Weight. London: Dorling Kindersley Limited, 2007.

MLA (9th ed.) Citation

Gassenheimer, Linda. Perfect Portion: How to Eat Your Favourite Foods and Still Lose Weight. Dorling Kindersley Limited, 2007.