APA (7th ed.) Citation

Sugden, S. (1930). The parachor and valency. G. Routledge.

Chicago Style (17th ed.) Citation

Sugden, S. The Parachor and Valency. London: G. Routledge, 1930.

MLA (9th ed.) Citation

Sugden, S. The Parachor and Valency. G. Routledge, 1930.

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