Gaya APA

Elsner, P., Maibach, H, I. (2005). Cosmeceuticals and Active Cosmetics Drugs Versus Cosmetics . New York: Taylor & Francis Group.

Gaya MLA

Elsner, Peter., Maibach, Howard, I.. "Cosmeceuticals and Active Cosmetics Drugs Versus Cosmetics". New York: Taylor & Francis Group, 2005. Text.