Kumar, J. (2013). Apache Solr PHP Integration. Packt Publishing Ltd..
Lua i Stíl Chicago (17ú heag.)Kumar, Jayant. Apache Solr PHP Integration. Birmingham: Packt Publishing Ltd., 2013.
Lua MLA (9ú heag.)Kumar, Jayant. Apache Solr PHP Integration. Packt Publishing Ltd., 2013.
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