एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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