National Portrait Gallery (London) : : Illustrated List with 138 illustrations and an index of artists.

MLA

National Portrait Gallery (london) : Illustrated List with 138 Illustrations and an Index of Artists. London: National Portrait Gallery (Londen), 1928.

APA

(1928). National Portrait Gallery (London) : Illustrated List with 138 illustrations and an index of artists. London: National Portrait Gallery (Londen).

Chicago

National Portrait Gallery (london): Illustrated List with 138 Illustrations and an Index of Artists. London: National Portrait Gallery (Londen), 1928.