(1) Peter Murray and Linda Murray (1959) A Dictionary of Art & Artists, Great Britain: Penguin Reference Books, softcover.

(2) Adam Butler, Claire van Cleave and Susan Stirling (1994) The Art Book, London: Phaidon Press Limited, softcover, illustrated in colour.

(3) Herbert Read (1974) A Concise History of Modern Painting, London: Thames and Hudson, softcover, illustrated in colour.

(4) Arthur C. Danto (1997) After the End of Art: Contemporary Art and the Pale of History, New Jersey: Princeton University Press, hardcover with dust jacket, illustrated in black and white, dated 12-5-98.

(5) Martin Kemp (ed) (2000) The Oxford History of Western Art, New York: Oxford University Press, hardcover with dust jacket, illustrated in colour.

(6) Various Authors (2011) The Art Museum, London: Phaidon Press Limited, hard cover, illustrated in colour.