Companje, K. P. (2009). Two centuries of solidarity: German, Belgian and Dutch social health care insurance 1770-2008. Aksant.
Chicago-čujuhus (17. p.)Companje, K. P. Two Centuries of Solidarity: German, Belgian and Dutch Social Health Care Insurance 1770-2008. Amsterdam: Aksant, 2009.
MLA-čujuhus (9. p.)Companje, K. P. Two Centuries of Solidarity: German, Belgian and Dutch Social Health Care Insurance 1770-2008. Aksant, 2009.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.