Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Arbeter-ring in Yisroel – Brith Haavoda:

"

Its first secretary was Isachar (Oskar) Artuski (birth name: Eichenbaum/Aykhenboym, 1903 or 1908-1971), a former Polish Communist who had joined the Bund in 1935. He was also the founder and first editor of Lebns Fragn (see below) and a correspondent of an American Trotskyist magazine “Labor Action”.[1]