SpringerLink (Online service), Ifenthaler, D., Bellin-Mularski, N., & Mah, D. (2016). Foundation of Digital Badges and Micro-Credentials: Demonstrating and Recognizing Knowledge and Competencies. Springer International Publishing : Imprint: Springer.
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Dirk Ifenthaler, Nicole Bellin-Mularski, και Dana-Kristin Mah. Foundation of Digital Badges and Micro-Credentials: Demonstrating and Recognizing Knowledge and Competencies. Cham: Springer International Publishing : Imprint: Springer, 2016.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Foundation of Digital Badges and Micro-Credentials: Demonstrating and Recognizing Knowledge and Competencies. Springer International Publishing : Imprint: Springer, 2016.
