Cita APA (7th ed.)

(2005). ESRI map book, v.20. ESRI.

Cita Chicago (17th ed.)

ESRI Map Book, V.20. U.S.A: ESRI, 2005.

Cita MLA (9th ed.)

ESRI Map Book, V.20. ESRI, 2005.

Atenció: Aquestes cites poden no estar 100% correctes.