TOZER, K. N.; GREENFIELD, R. M.; DODD, M. B.; JAMES, T. K.; CAMERON, C. A. Controlling variegated thistle in East Coast North Island hill-country. Journal of New Zealand Grasslands, [S. l.], v. 80, p. 225–234, 2018. DOI: 10.33584/jnzg.2018.80.326. Disponível em: https://www.nzgajournal.org.nz.myth.agency/index.php/JoNZG/article/view/326. Acesso em: 6 jun. 2026.