APA (7th ed.) Citation

Strang, B. M. (1970). A History of English. Routledge.

Chicago Style (17th ed.) Citation

Strang, Barbara M.H. A History of English. London: Routledge, 1970.

MLA (9th ed.) Citation

Strang, Barbara M.H. A History of English. Routledge, 1970.