Analysis of information sources in references of the Wikipedia article "Farnese Hercules" in English language version.
{{cite book}}: CS1 maint: location missing publisher (link) Robertson, Martin (1975). A History of Greek Art. Cambridge.{{cite book}}: CS1 maint: location missing publisher (link) Krull, Diethelm (1985). Der Herakles vom Typ Farnese. Kopienkritische Untersuchung einer Schöpfung des Lysipp. Frankfurt am Main.{{cite book}}: CS1 maint: location missing publisher (link)