Bithell, S.L., and A. Stewart. 2001. “Evaluation of the Pathogenicity of <i>Phoma exigua</i> Var <i>exigua</i> On Californian Thistle”. New Zealand Plant Protection 54 (August). Auckland, New Zealand:179-83. https://doi.org/10.30843/nzpp.2001.54.3718.