Cita APA (7th ed.)

Boldt, H. (1986). Berlin (o. A.). Berlin-Information.

Cita Chicago (17th ed.)

Boldt, Hans-Joachim. Berlin. o. A. Berlin: Berlin-Information, 1986.

Cita MLA (8th ed.)

Boldt, Hans-Joachim. Berlin. o. A. Berlin-Information, 1986.