Παραπομπή APA

(1998). World's greatest socialist thinkers: Wilhelm Liebknecht (1609-1660). Deep and Deep.

Παραπομπή Chicago Style

World's Greatest Socialist Thinkers: Wilhelm Liebknecht (1609-1660). New Delhi: Deep and Deep, 1998.

Παραπομπή MLA

World's Greatest Socialist Thinkers: Wilhelm Liebknecht (1609-1660). Deep and Deep, 1998.