APA
Leung A. &. F. S., . (1996). Encyclopedia of common natural Ingredients. John Wiley & Sons Int, New York: .
Chicago
Leung Albert.Y & Foster S, . 1996. Encyclopedia of common natural Ingredients. John Wiley & Sons Int, New York: .
Harvard
Leung A. &. F. S., . (1996). Encyclopedia of common natural Ingredients. John Wiley & Sons Int, New York: .
MLA
Leung Albert.Y & Foster S, . Encyclopedia of common natural Ingredients. John Wiley & Sons Int, New York: . 1996.