APA (7th ed.) Citation

Worrall, J., & Worrall, I. J. (1969). Introduction to valence theory. Macdonald & Co.

Chicago Style (17th ed.) Citation

Worrall, Jean, and I. J. Worrall. Introduction to Valence Theory. London: Macdonald & Co, 1969.

MLA (9th ed.) Citation

Worrall, Jean, and I. J. Worrall. Introduction to Valence Theory. Macdonald & Co, 1969.