APA (7th ed.) Citation

Collen, A. (2015). 10% human: How your body's microbes hold the key to health and happiness. William Collins.

Chicago Style (17th ed.) Citation

Collen, Alanna. 10% Human: How Your Body's Microbes Hold the Key to Health and Happiness. London: William Collins, 2015.

MLA (9th ed.) Citation

Collen, Alanna. 10% Human: How Your Body's Microbes Hold the Key to Health and Happiness. William Collins, 2015.