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WikiPedia: John_Millington_Synge http://cantic.bnc.cat/registres/CUCId/a10462284 http://www.irishtimes.com/newspaper/weekend/2010/0... http://www.josephoconnorauthor.com/novel-ghost-lig... http://www.oxforddnb.com http://www.oxforddnb.com/view/article/36402 http://catalogo.bne.es/uhtbin/authoritybrowse.cgi?... http://data.bibliotheken.nl/id/thes/p069588600 http://www.gutenberg.org/ebooks/authors/search/?qu... http://mak.bn.org.pl/cgi-bin/KHW/makwww.exe?BM=1&N... https://www.livingedition.at/en/isbn/9783901585173...