APA
Heys H. L., . (1979). New Organic chemistry. London: Harrap.
Chicago
Heys H L, . 1979. New Organic chemistry. London: Harrap.
Harvard
Heys H. L., . (1979). New Organic chemistry. London: Harrap.
MLA
Heys H L, . New Organic chemistry. London: Harrap. 1979.