-. (2020). Foreword to the Articles from RGT2019 Conference. Ksiegarnia Akademicka Publishing.
Cita Chicago Style (17a ed.)-. Foreword to the Articles from RGT2019 Conference. Ksiegarnia Akademicka Publishing, 2020.
Cita MLA (8a ed.)-. Foreword to the Articles from RGT2019 Conference. Ksiegarnia Akademicka Publishing, 2020.
Precaución: Estas citas no son 100% exactas.