APA (7th ed.) Citation
Heys, H. (1960). An introduction to electronic theory of organic compounds. George G. Harrap.
Chicago Style (17th ed.) Citation
Heys, H.L. An Introduction to Electronic Theory of Organic Compounds. London: George G. Harrap, 1960.
MLA (9th ed.) Citation
Heys, H.L. An Introduction to Electronic Theory of Organic Compounds. George G. Harrap, 1960.
Warning: These citations may not always be 100% accurate.