APA (7th ed.) Citation

National Portrait Gallery (Great Britain) & Gibson, R. (1993). The portrait now. National Portrait Gallery.

Chicago Style (17th ed.) Citation

National Portrait Gallery (Great Britain) and Robin Gibson. The Portrait Now. London: National Portrait Gallery, 1993.

MLA (9th ed.) Citation

National Portrait Gallery (Great Britain) and Robin Gibson. The Portrait Now. National Portrait Gallery, 1993.

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