APA aipamena

CACI, Inc. - Federal. (1999). The Sourcebook of zip code demographics (14th ed.). CACI Marketing Systems.

Chicago Style aipamena

CACI, Inc. - Federal. The Sourcebook of Zip Code Demographics. 14th ed. Arlington, VA: CACI Marketing Systems, 1999.

MLA aipamena

CACI, Inc. - Federal. The Sourcebook of Zip Code Demographics. 14th ed. CACI Marketing Systems, 1999.