APA Edition Citation

Robin, G., & Keith Roberts. (1972). British portrait painters. Encyclopaedia Britannia.

Chicago Edition Citation

Robin, Gibson, and Keith Roberts. British Portrait Painters. London: Encyclopaedia Britannia, 1972.

MLA Edition Citation

Robin, Gibson, and Keith Roberts. British Portrait Painters. Encyclopaedia Britannia, 1972.

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