APA Style

Penn, Julie. (2011). How To Stay Healthy - Discover 4 (1). New York: Oxford.

Chicago Style

Penn, Julie. How To Stay Healthy - Discover 4. 1 New York: Oxford, 2011. .

MLA Style

Penn, Julie. How To Stay Healthy - Discover 4. 1 New York: Oxford, 2011. .

Turabian Style

Penn, Julie. How To Stay Healthy - Discover 4. 1 New York: Oxford, 2011. .