APA (7th ed.) Citation

Maar, H. G. d. (1924). A history of modern English romanticism. H. Milford.

Chicago Style (17th ed.) Citation

Maar, Harko G. de. A History of Modern English Romanticism. London, New York [etc.]: H. Milford, 1924.

MLA (9th ed.) Citation

Maar, Harko G. de. A History of Modern English Romanticism. H. Milford, 1924.