SpringerLink (Online service), k. t., Winke, P., & Gass, S. M. (2019). Foreign language proficiency in higher education (1st ed. 2019.). Cham : Springer International Publishing : Imprint: Springer.
Chicago Style CitationSpringerLink (Online service), közreadó testület, Paula Winke, and Susan M. Gass. Foreign Language Proficiency in Higher Education. 1st ed. 2019. Cham : Springer International Publishing : Imprint: Springer, 2019.
MLA CitationSpringerLink (Online service), közreadó testület, Paula Winke, and Susan M. Gass. Foreign Language Proficiency in Higher Education. 1st ed. 2019. Cham : Springer International Publishing : Imprint: Springer, 2019.
Figyelmeztetés: Nem biztos, hogy ezek a forráshivatkozások 100%-ig pontosak.