Tozer, K.N., Greenfield, R.M., Dodd, M.B., James, T.K. and Cameron, C.A. 2018. Controlling variegated thistle in East Coast North Island hill-country. Journal of New Zealand Grasslands. 80, (Dec. 2018), 225–234. DOI:https://doi.org/10.33584/jnzg.2018.80.326.