MLA

Kassák Lajos. Ma, Aktivista folyóirat. [s.n.], 1923. https://collections.library.yale.edu/catalog/10268753.

APA, 6th edition

Kassák Lajos. (1923). Ma, aktivista folyóirat [Magazine covers, Magazines (periodicals)]. [s.n.], https://collections.library.yale.edu/catalog/10268753.