Cita APA (7th ed.)

Uexküll, T. v. Jakob von Uexkülls Umweltlehre: Thure von Uexküll. [Semiotik, 2].(1998).

Cita Chicago (17th ed.)

Uexküll, Thure von. "Jakob Von Uexkülls Umweltlehre: Thure Von Uexküll." [Semiotik, 2].(1998) .

Cita MLA (8th ed.)

Uexküll, Thure von. "Jakob Von Uexkülls Umweltlehre: Thure Von Uexküll." [Semiotik, 2].(1998), .