Bulletin of the Torrey Botanical Club. Torrey Botanical Society.
Chicago-čujuhus (17. p.)Bulletin of the Torrey Botanical Club. Torrey Botanical Society.
MLA-čujuhus (9. p.)Bulletin of the Torrey Botanical Club. Torrey Botanical Society.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.