APA (7th ed.) Citation

Wells, H. G., Postgate, R., & Wells, G. P. (1965). A Short history of the world. Penguin Group.

Chicago Style (17th ed.) Citation

Wells, H. G., Raymond Postgate, and George Philip Wells. A Short History of the World. London: Penguin Group, 1965.

MLA (9th ed.) Citation

Wells, H. G., et al. A Short History of the World. Penguin Group, 1965.