Cain, S. A. Foundations of Plant geography.
Chicago-čujuhus (17. p.)Cain, Stanley A. Foundations of Plant Geography.
MLA-čujuhus (9. p.)Cain, Stanley A. Foundations of Plant Geography.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.