Williamson, T., & Association, T. S. P. (1988). Knowability and constructivism. Blackwell Publishing.
Chicago-čujuhus (17. p.)Williamson, T., juo The Scots Philosophical Association. Knowability and Constructivism. Blackwell Publishing, 1988.
MLA-čujuhus (9. p.)Williamson, T., juo The Scots Philosophical Association. Knowability and Constructivism. Blackwell Publishing, 1988.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.