Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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