Adam, J. A. (2009). A mathematical nature walk. Princeton University Press.
Chicago-čujuhus (17. p.)Adam, John A. A Mathematical Nature Walk. Princeton: Princeton University Press, 2009.
MLA-čujuhus (9. p.)Adam, John A. A Mathematical Nature Walk. Princeton University Press, 2009.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.