1. ^The Grove encyclopedia of Islamic art and architecture Volume 2 - Page 301 Jonathan M. Bloom, Sheila Blair - 2009: " ...while Roman Petrović (1896–1947) developed an Expressionism that emphasized social themes."
2. ^The Art treasures of Bosnia and Herzegovina Đuro Basler, Mirza Filipović, Sulejman Balić - 1987: "From a wide diversity of influences Roman Petrovic (1896–1947) succeeded in forging his own individual style."
3. ^Bosnia: a cultural history Ivan Lovrenović - 2001: "Writing and painting were the two most important fields in which individual intellectual and artistic life developed. ... In painting - apart from those who had emerged in the previous period, like Gabrijel Jurkic, Roman Petrović, ..."
4. ^Survey Sarajevo Volume 9, Issue 4; Volume 9, Issue 4, Univerzitet u Sarajevu, 1982 "Parallel with this the Association of Artists of Bosnia and Herzegovina has organized exhibitions in Dijon, Modena, Baku, in Poland, Germany, while its Gallery "Roman Petrovic", opened in 1980, has also a rich exhibition programme."