Petkov, M., & Petkov, M. (2019). Oligarchic Party-Group Relations in Bulgaria: The Extended Parentela Policy Network Model (1st ed. 2019.). Springer International Publishing : Imprint: Palgrave Macmillan. https://doi.org/10.1007/978-3-319-98899-3
Παραπομπή σε μορφή Chicago (17η εκδ.)Petkov, Mihail, και Mihail Petkov. Oligarchic Party-Group Relations in Bulgaria: The Extended Parentela Policy Network Model. 1st ed. 2019. Cham: Springer International Publishing : Imprint: Palgrave Macmillan, 2019. https://doi.org/10.1007/978-3-319-98899-3.
Παραπομπή σε μορφή MLA (8th εκδ.)Petkov, Mihail, και Mihail Petkov. Oligarchic Party-Group Relations in Bulgaria: The Extended Parentela Policy Network Model. 1st ed. 2019. Springer International Publishing : Imprint: Palgrave Macmillan, 2019. https://doi.org/10.1007/978-3-319-98899-3.
