APA
Osborne H. (., . (1981). Oxford companion to twentieth-century Art. Oxford: Oxford University Press.
Chicago
Osborne Harold (ed), . 1981. Oxford companion to twentieth-century Art. Oxford: Oxford University Press.
Harvard
Osborne H. (., . (1981). Oxford companion to twentieth-century Art. Oxford: Oxford University Press.
MLA
Osborne Harold (ed), . Oxford companion to twentieth-century Art. Oxford: Oxford University Press. 1981.