Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (8th ed.)

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