Haarmann, H. The development of sign conceptions in the evolution of human cultures: Harald Haarmann. [Semiotik, 1].(1997).
Cita Chicago (17th ed.)Haarmann, Harald. "The Development of Sign Conceptions in the Evolution of Human Cultures: Harald Haarmann." [Semiotik, 1].(1997) .
Cita MLA (8th ed.)Haarmann, Harald. "The Development of Sign Conceptions in the Evolution of Human Cultures: Harald Haarmann." [Semiotik, 1].(1997), .
Atenció: Aquestes cites poden no estar 100% correctes.