APA (7th ed.) Citation

Cairo, L., & Kahan, T. (1965). Variational techniques in electro-magnetism. Blackie.

Chicago Style (17th ed.) Citation

Cairo, Laurent, and Theo Kahan. Variational Techniques in Electro-magnetism. Lond.: Blackie, 1965.

MLA (8th ed.) Citation

Cairo, Laurent, and Theo Kahan. Variational Techniques in Electro-magnetism. Blackie, 1965.