APA (7th ed.) Citation

Phaidon Press. (1999). The 20th Century Art Book. Phaidon Press.

Chicago Style (17th ed.) Citation

Phaidon Press. The 20th Century Art Book. London: Phaidon Press, 1999.

MLA (9th ed.) Citation

Phaidon Press. The 20th Century Art Book. Phaidon Press, 1999.