The Press congress of the world in Switzerland,
with foreward by William E. Rappard ... edited by Walter Williams ...

APA Citation

Press congress of the world (2nd : 1926 : Geneva and Lausanne)., Williams, W. (1928). The Press congress of the world in Switzerland. Columbia, Mo.: E. W. Stephens publishing company.

MLA Citation

Press congress of the world (2nd : 1926 : Geneva and Lausanne), and Walter Williams. The Press Congress of the World In Switzerland. Columbia, Mo.: E. W. Stephens publishing company, 1928.

Warning: These citations may not always be complete (especially for serials).