APA (7th ed.) Citation

Historisches 1.-Mai-Plakat (ca. 1905-1912).

Chicago Style (17th ed.) Citation

Historisches 1.-Mai-Plakat (ca. 1905-1912).

MLA (8th ed.) Citation

Historisches 1.-Mai-Plakat (ca. 1905-1912).

Warning: These citations may not always be 100% accurate.