Style de citation APA

Garratt, G. T. (1940). What has happened to Europe? Bobbs-Merrill.

Style de citation Chicago

Garratt, Geoffrey T. What Has Happened to Europe? Indianapolis [u.a.]: Bobbs-Merrill, 1940.

Style de citation MLA

Garratt, Geoffrey T. What Has Happened to Europe? Bobbs-Merrill, 1940.