APA (7. basım) Alıntı

Maps.com (Firm) & ebrary, Inc. (2001). Houston area. Maps.com.

Chicago Style (17. basım) Atıf

Maps.com (Firm) ve Inc ebrary. Houston Area. [S.l.]: Maps.com, 2001.

MLA (9th ed.) Atıf

Maps.com (Firm) ve Inc ebrary. Houston Area. Maps.com, 2001.