Stephan, H. (1981). Lef and the Left Front of the Arts. Peter Lang International Academic Publishers.
Čikaški stil citiranja (17. izdanje)Stephan, Halina. Lef and the Left Front of the Arts. Bern: Peter Lang International Academic Publishers, 1981.
MLA način citiranja (9. izdanje)Stephan, Halina. Lef and the Left Front of the Arts. Peter Lang International Academic Publishers, 1981.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.