U.S. population change, 1980-1994.
MLA
Maps.com (Firm). U.S. population change, 1980-1994. [S.l.] : Maps.com, c1999.
APA
Maps.com (Firm). (1999). U.S. population change, 1980-1994. [S.l.] : Maps.com.
Chicago
Maps.com (Firm). U.S. population change, 1980-1994. [S.l.] : Maps.com, c1999.