Cita APA (7th ed.)
Knowles, A. K. Past Time, Past Place: GIS for History. Esri.
Cita Chicago (17th ed.)
Knowles, Anne Kelly. Past Time, Past Place: GIS for History. Redlands, EUA: Esri.
Cita MLA (9th ed.)
Knowles, Anne Kelly. Past Time, Past Place: GIS for History. Esri.
Atenció: Aquestes cites poden no estar 100% correctes.