Doumont, J. (2009). Trees, Maps, and Theorems: Effective communication for rational minds. Principiae.
Chicago-čujuhus (17. p.)Doumont, Jean-luc. Trees, Maps, and Theorems: Effective Communication for Rational Minds. Kraainem, Belgium: Principiae, 2009.
MLA-čujuhus (9. p.)Doumont, Jean-luc. Trees, Maps, and Theorems: Effective Communication for Rational Minds. Principiae, 2009.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.