International Symposium on the Flora of Ethiopia and Eritrea Carlsberg Academy, Friis, I., & Ryding, O. (2001). Biodiversity research in the Horn of Africa region: Proceedings of the Third International Symposium on the Flora of Ethiopia and Eritrea at the Carlsberg Academy, Copenhagen, August 25-27, 1999. Royal Danish Academy of Sciences and Letters.
Style de citation Chicago (17e éd.)International Symposium on the Flora of Ethiopia and Eritrea Carlsberg Academy, Ib Friis, et Olof Ryding. Biodiversity Research in the Horn of Africa Region: Proceedings of the Third International Symposium on the Flora of Ethiopia and Eritrea at the Carlsberg Academy, Copenhagen, August 25-27, 1999. Copenhagen: Royal Danish Academy of Sciences and Letters, 2001.
Style de citation MLA (9e éd.)International Symposium on the Flora of Ethiopia and Eritrea Carlsberg Academy, et al. Biodiversity Research in the Horn of Africa Region: Proceedings of the Third International Symposium on the Flora of Ethiopia and Eritrea at the Carlsberg Academy, Copenhagen, August 25-27, 1999. Royal Danish Academy of Sciences and Letters, 2001.