Ritler, A. (1997). Land use, forests and the landscape of Ethiopia: 1699 - 1865 ; an enquiry into the historical geography of central northern Ethiopia. Univ. of Bern [u.a.].
Chicago-Zitierstil (17. Ausg.)Ritler, Alfons. Land Use, Forests and the Landscape of Ethiopia: 1699 - 1865 ; an Enquiry into the Historical Geography of Central Northern Ethiopia. Bern: Univ. of Bern [u.a.], 1997.
MLA-Zitierstil (9. Ausg.)Ritler, Alfons. Land Use, Forests and the Landscape of Ethiopia: 1699 - 1865 ; an Enquiry into the Historical Geography of Central Northern Ethiopia. Univ. of Bern [u.a.], 1997.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.