SpringerLink (Online service), Frey, B. S., & Schaltegger, C. A. (2019). 21st Century Economics: Economic Ideas You Should Read and Remember (1st ed. 2019.). Springer International Publishing : Imprint: Springer. https://doi.org/10.1007/978-3-030-17740-9
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Bruno S. Frey, και Christoph A. Schaltegger. 21st Century Economics: Economic Ideas You Should Read and Remember. 1st ed. 2019. Cham: Springer International Publishing : Imprint: Springer, 2019. https://doi.org/10.1007/978-3-030-17740-9.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. 21st Century Economics: Economic Ideas You Should Read and Remember. 1st ed. 2019. Springer International Publishing : Imprint: Springer, 2019. https://doi.org/10.1007/978-3-030-17740-9.
