APA (7th ed.) Citation

National Gallery & Holmes, C. J. (1923). National Gallery ... illustrations to the catalogue. [s.n.].

Chicago Style (17th ed.) Citation

National Gallery and Charles John Holmes. National Gallery ... Illustrations to the Catalogue. London: [s.n.], 1923.

MLA (9th ed.) Citation

National Gallery and Charles John Holmes. National Gallery ... Illustrations to the Catalogue. [s.n.], 1923.

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