APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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

Warning: These citations may not always be 100% accurate.