Elspeth Haston, James E. Richardson, Peter F. Stevens, Mark W. Chase, David J. Harris. The Linear Angiosperm Phylogeny Group (LAPG) III: a linear sequence of the families in APG III Botanical Journal of the Linnean Society, Vol. 161, No. 2. (2009), pp. 128-131. doi:10.1111/j.1095-8339.2009.01000.x Key: citeulike:6006207 pdf: http://onlinelibrary.wiley.com/doi/10.1111/j.1095-8339.2009.01000.x/pdf
