APA (7th ed.) Citation

Barker, E. (1974). The Unity of Mediaeval Civilization. Church, State and Study. Essays., 44-71.

Chicago Style (17th ed.) Citation

Barker, Ernest. "The Unity of Mediaeval Civilization." Church, State and Study. Essays. 1974: 44-71.

MLA (9th ed.) Citation

Barker, Ernest. "The Unity of Mediaeval Civilization." Church, State and Study. Essays., 1974, pp. 44-71.