Gaya APA

Torssell, K, B, G. (1983). Natural Product Chemistry: a Mechanistic and biosynthetic approach to secondary metabolism . New York: John Wiley & Sons Ltd..

Gaya MLA

Torssell, Kurt, B., G.. "Natural Product Chemistry: a Mechanistic and biosynthetic approach to secondary metabolism". New York: John Wiley & Sons Ltd., 1983. Text.