APA (7th ed.) Citation

(1977). Checkpoint Charlie: (Friedrichstrasse Cross Point). U. S. Command and U. S. Army Berlin.

Chicago Style (17th ed.) Citation

Checkpoint Charlie: (Friedrichstrasse Cross Point). Berlin: U. S. Command and U. S. Army Berlin, 1977.

MLA (9th ed.) Citation

Checkpoint Charlie: (Friedrichstrasse Cross Point). U. S. Command and U. S. Army Berlin, 1977.