The Oxford companion to the theatre
edited by Phyllis Hartnoll
Oxford University Press, 1951
 Buku Referensi
Walker, David M.
The oxford companion to law
Clarendon Press, 1980
 Buku Referensi
The Oxford companion to English literature
edited by Margaret Drabble
Oxford University Press, 1985
 Buku Referensi
Wilde, William H.
The Oxford companion to Australian literature
Oxford University Press, 1994
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The Oxford companion to art
edited by Harold Osborne
Clarendon Press, 1970
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