Karren, T. (1991). Tuwim as he was. Polin.
Chicago-viite (17. p.)Karren, Tamara. "Tuwim as He Was." Polin 1991.
MLA-viite (8. p.)Karren, Tamara. "Tuwim as He Was." Polin, 1991.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.
Karren, T. (1991). Tuwim as he was. Polin.
Chicago-viite (17. p.)Karren, Tamara. "Tuwim as He Was." Polin 1991.
MLA-viite (8. p.)Karren, Tamara. "Tuwim as He Was." Polin, 1991.