APA (7th ed.) Zitazioa
Trutkowski, E. (2016). Topic drop and null subjects in German. De Gruyter.
Chicago Style (17th ed.) Zitazioa
Trutkowski, Ewa. Topic Drop and Null Subjects in German. Berlin, [Germany] ; Boston [Massachusetts]: De Gruyter, 2016.
MLA (9th ed.) Zitazioa
Trutkowski, Ewa. Topic Drop and Null Subjects in German. De Gruyter, 2016.
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