Cita APA (7a ed.)
Kollár, V. Certification and Its New Aspects in the Slovak Republic.
Cita Chicago Style (17a ed.)
Kollár, Vojtech. Certification and Its New Aspects in the Slovak Republic.
Cita MLA (9a ed.)
Kollár, Vojtech. Certification and Its New Aspects in the Slovak Republic.
Precaución: Estas citas no son 100% exactas.