Lua APA (7ú heag.)

Friedemann, P., & Wang, E. (1981). Current left and labour press 1978-1981. Bochum: IALHI.

Lua i Stíl Chicago (17ú heag.)

Friedemann, Peter, agus Edgar Wang. Current Left and Labour Press 1978-1981. Bochum: IALHI, 1981.

Lua MLA (8ú heag.)

Friedemann, Peter, agus Edgar Wang. Current Left and Labour Press 1978-1981. Bochum: IALHI, 1981.

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