APA (7th ed.) Citation

Porter, A. K. (1923). Romanesque sculpture of the pilgrimage roads. Hacker Art Books.

Chicago Style (17th ed.) Citation

Porter, Arthur Kingsley. Romanesque Sculpture of the Pilgrimage Roads. New York: Hacker Art Books, 1923.

MLA (9th ed.) Citation

Porter, Arthur Kingsley. Romanesque Sculpture of the Pilgrimage Roads. Hacker Art Books, 1923.

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