(1973). The Methodological unity of science. D.Reidel.
Chicago-čujuhus (17. p.)The Methodological Unity of Science. Dordrecht-Holland: D.Reidel, 1973.
MLA-čujuhus (9. p.)The Methodological Unity of Science. D.Reidel, 1973.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.