Brinkman & Leipe 2001, p. 323. Brinkman, Fiona S.L. & Leipe, Detlef D. (2001), "Phylogenetic analysis"(PDF), in Baxevanis, Andreas D. & Ouellette, B.F. Francis (eds.), Bioinformatics: a practical guide to the analysis of genes and proteins (2nd ed.), pp. 323–358, archived from the original(PDF) on 20 October 2013, retrieved 2013-10-19
bnf.fr
gallica.bnf.fr
(Cuénot 1940) Cuénot, Lucien (1940), "Remarques sur un essai d'arbre généalogique du règne animal", Comptes Rendus de l'Académie des Sciences de Paris, 210: 23–27. Available free online at Gallica (No direct URL). This is the paper credited by (Hennig 1979) for the first use of the term 'clade'.
Brinkman & Leipe 2001, p. 323. Brinkman, Fiona S.L. & Leipe, Detlef D. (2001), "Phylogenetic analysis"(PDF), in Baxevanis, Andreas D. & Ouellette, B.F. Francis (eds.), Bioinformatics: a practical guide to the analysis of genes and proteins (2nd ed.), pp. 323–358, archived from the original(PDF) on 20 October 2013, retrieved 2013-10-19