Gaya APA

Khan, I, A. (2010). Leung's Encuclopedia of Common Natural Ingredientss: Used in Food, Drugs, and Cosmetics . Canada: John Wiley & Sons,Inc.

Gaya MLA

Khan, Ikhlas, A.. "Leung's Encuclopedia of Common Natural Ingredientss: Used in Food, Drugs, and Cosmetics". Canada: John Wiley & Sons,Inc, 2010. Koleksi Elektronik.