APA

Friis I. e., Ryding O. e., . (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. Copenhagen: Royal Danish Academy of Sciences and Letters : Reitzel [commission agent].

Chicago

Friis Ib ed, Ryding Olof ed, . 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. Copenhagen: Royal Danish Academy of Sciences and Letters : Reitzel [commission agent].

Harvard

Friis I. e., Ryding O. e., . (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. Copenhagen: Royal Danish Academy of Sciences and Letters : Reitzel [commission agent].

MLA

Friis Ib ed, Ryding Olof ed, . 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 : Reitzel [commission agent]. 2001.