911, the emergency telephone number;
a handbook for community planning.

APA Citation

United States. Office of Telecommunications Policy. (1973). 911, the emergency telephone number: a handbook for community planning. Washington: For sale by the Supt. of Docs., U.S. Govt. Print. Off.

MLA Citation

United States. Office of Telecommunications Policy. 911, the Emergency Telephone Number: a Handbook for Community Planning. Washington: For sale by the Supt. of Docs., U.S. Govt. Print. Off, 1973.

Warning: These citations may not always be complete (especially for serials).