in Italian:

Isabella Milani, Chow Chow, Altea - Roma, 2011
Book review: http://www.tipresentoilcane.com/2011/12/14/chow-chow-di-isabella-milani/

Isabella & Siro Baruffaldi, Chow Chow Champions of Europe, 1998

Isabella & Siro Baruffaldi, Il Chow Chow, 1992

in English:

Honor Green, The chow chow, K and R Books, 1975

Lady Dunbar, The Chow Chow, Vintage Dog Books, 2008

Samuel Draper, Joan McDonald Brearley, The Book of the Chow Chow, TFH Publications, 1993  

Samuel Draper, Joan McDonald Brearley, The World of the Chow Chow, Tfh Pubns Inc, 1992

A novel about Chows:
Jeffrey Trawford, The Land of the Chows, PublishAmerica, 2004

in Polish:

Zygmunt Jakubowski, Marian Szymandera, Chow-chow, Wydawnictwa Akcydensowe, Warszawa, 1988