National Gallery (Great Britain) & Holmes, C. J. (1926). Illustrated guide (4th and rev. ed.). Printed for the Trustees.
Chicago-viite (17. p.)National Gallery (Great Britain) ja C. J. Holmes. Illustrated Guide. 4th and rev. ed. London: Printed for the Trustees, 1926.
MLA-viite (8. p.)National Gallery (Great Britain) ja C. J. Holmes. Illustrated Guide. 4th and rev. ed. Printed for the Trustees, 1926.
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