APA (7th ed.) Citation

Holmes, R. (1997). The romantic poets and their circle. National Portrait Gallery.

Chicago Style (17th ed.) Citation

Holmes, Richard. The Romantic Poets and Their Circle. London: National Portrait Gallery, 1997.

MLA (9th ed.) Citation

Holmes, Richard. The Romantic Poets and Their Circle. National Portrait Gallery, 1997.

Warning: These citations may not always be 100% accurate.