APA (7th ed.) Citation

Hearder, H. (1966). Europe in the nineteenth century, 1830-1880. Longmans.

Chicago Style (17th ed.) Citation

Hearder, Harry. Europe in the Nineteenth Century, 1830-1880. London: Longmans, 1966.

MLA (9th ed.) Citation

Hearder, Harry. Europe in the Nineteenth Century, 1830-1880. Longmans, 1966.