BURNS, J. G. Pyrethrum Cultivation in Kumaun (United Provinces). Indian Forester, [S. l.], v. 72, n. 11, p. 545–847, 1946. DOI: 10.36808/if/1946/v72i11/22665. Disponível em: https://indianforester.co.in/index.php/indianforester/article/view/22665. Acesso em: 21 feb. 2026.