APA (7th ed.) Citation

Olby, R. C. (1990). Companion to the history of modern science. L. Routledge.

Chicago Style (17th ed.) Citation

Olby, Robert C. Companion to the History of Modern Science. London: L. Routledge, 1990.

MLA (9th ed.) Citation

Olby, Robert C. Companion to the History of Modern Science. L. Routledge, 1990.