Cita APA (7th ed.)
Ehlers, U. (2021). Future Skills. Springer Nature.
Cita Chicago (17th ed.)
Ehlers, Ulf-Daniel. Future Skills. Springer Nature, 2021.
Cita MLA (9th ed.)
Ehlers, Ulf-Daniel. Future Skills. Springer Nature, 2021.
Atenció: Aquestes cites poden no estar 100% correctes.