Dioscorides (1902), "Styrax", in Julius Berendes (ed.), De materia medica(PDF), PharmaWiki.ch, p. 89, archived from the original(PDF) on 2015-09-24, retrieved 2014-10-10
Dioscorides (1902), "Styrax", in Julius Berendes (ed.), De materia medica(PDF), PharmaWiki.ch, p. 89, archived from the original(PDF) on 2015-09-24, retrieved 2014-10-10