Gupta, O. P. Weedy Aquatic Plants: Their utility, menace and management.
Chicago-čujuhus (17. p.)Gupta, O. P.1933-. Weedy Aquatic Plants: Their Utility, Menace and Management.
MLA-čujuhus (9. p.)Gupta, O. P.1933-. Weedy Aquatic Plants: Their Utility, Menace and Management.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.