APA (7th ed.) Citation

Heys, H. L. (1960). An introduction to electronic theory of organic compounds. Harrap.

Chicago Style (17th ed.) Citation

Heys, Harry Law. An Introduction to Electronic Theory of Organic Compounds. London: Harrap, 1960.

MLA (8th ed.) Citation

Heys, Harry Law. An Introduction to Electronic Theory of Organic Compounds. Harrap, 1960.

Warning: These citations may not always be 100% accurate.