SpringerLink (Online service), Nederhof, M., & Morrill, G. (2013). Formal grammar: 17th and 18th International Conferences, FG 2012, Opole, Poland, August 2012, Revised Selected Papers, FG 2013, Düsseldorf, Germany, August 2013. Proceedings. Springer Berlin Heidelberg.
Cita Chicago (17th ed.)SpringerLink (Online service), Mark-Jan Nederhof, i Glyn Morrill. Formal Grammar: 17th and 18th International Conferences, FG 2012, Opole, Poland, August 2012, Revised Selected Papers, FG 2013, Düsseldorf, Germany, August 2013. Proceedings. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013.
Cita MLA (8th ed.)SpringerLink (Online service), et al. Formal Grammar: 17th and 18th International Conferences, FG 2012, Opole, Poland, August 2012, Revised Selected Papers, FG 2013, Düsseldorf, Germany, August 2013. Proceedings. Springer Berlin Heidelberg, 2013.