APA (7th ed.) Citation

Williamson, M. M., & Williamson, G. W. (1948). Motor vehicles of to-day. P. Elek.

Chicago Style (17th ed.) Citation

Williamson, Mary Marshall, and George William Williamson. Motor Vehicles of To-day. [London]: P. Elek, 1948.

MLA (9th ed.) Citation

Williamson, Mary Marshall, and George William Williamson. Motor Vehicles of To-day. P. Elek, 1948.