Catalogue of the National Portrait Gallery (London) 1856-1947 : : with an index of artists.

MLA

Catalogue of the National Portrait Gallery (london) 1856-1947 : with an Index of Artists. London: National Portrait Gallery (Londen), 1949.

APA

(1949). Catalogue of the National Portrait Gallery (London) 1856-1947 : with an index of artists. London: National Portrait Gallery (Londen).

Chicago

Catalogue of the National Portrait Gallery (london) 1856-1947: With an Index of Artists. London: National Portrait Gallery (Londen), 1949.