APA (7th ed.) Citation

Sidgwick, N. V. (1953). The electronic theory of valency (Reprinted.). University Press.

Chicago Style (17th ed.) Citation

Sidgwick, Nevil Vincent. The Electronic Theory of Valency. Reprinted. Oxford: University Press, 1953.

MLA (9th ed.) Citation

Sidgwick, Nevil Vincent. The Electronic Theory of Valency. Reprinted. University Press, 1953.