Richthofen, D. v., & Cooper, C. (2019). Windows into the earth: Geopark Ries, Europe's giant meteorite crater : with excursion tips (2nd edition, December 2019.). Geopark Ries e.V.
Chicago Style (17th ed.) CitationRichthofen, Dietrich von, and Cindy Cooper. Windows into the Earth: Geopark Ries, Europe's Giant Meteorite Crater : With Excursion Tips. 2nd edition, December 2019. Donauwörth: Geopark Ries e.V, 2019.
MLA (9th ed.) CitationRichthofen, Dietrich von, and Cindy Cooper. Windows into the Earth: Geopark Ries, Europe's Giant Meteorite Crater : With Excursion Tips. 2nd edition, December 2019. Geopark Ries e.V, 2019.
Warning: These citations may not always be 100% accurate.