Cita APA (7a ed.)

Maps.com (Firm) & ebrary, Inc. (2002). Iowa. Maps.com.

Cita Chicago Style (17a ed.)

Maps.com (Firm) y Inc ebrary. Iowa. [S.l.]: Maps.com, 2002.

Cita MLA (9a ed.)

Maps.com (Firm) y Inc ebrary. Iowa. Maps.com, 2002.