W. T.  Stearn, ?Linnaean classification, nomenclature, and method?, in The compleat naturalist: a life of Linnaeus, 2nd ed., W.  Blunt and AUTHOR!), (C. O. R. R. E. C. T. :, Eds. Princeton & Oxford: Princeton University Press, 2001, pp. 246-252.

W.  Blunt, The compleat naturalist: a life of Linnaeus, 2nd ed. Princeton & Oxford: Princeton University Press, 2001, p. 264.