@book{bhlpg18088641, title = {Flora of tropical Africa }, volume = {v.2 (1871) [Leg.-Fic.]}, url = {https://www.biodiversitylibrary.org/page/18088641}, publisher = {L. Reeve and co}, author = {Oliver, Daniel, 1830 -1916}, year = {1871}, pages = {Page 17}, } @book{bhlpg36335747, title = {Naturwissenschaftliche Reise nach Mossambique : auf befehl Seiner Majestät des königs Friedrich Wilhelm IV, in den jahren 1842 bis 1848 ausgeführt }, volume = {v. 1}, url = {https://www.biodiversitylibrary.org/page/36335747}, publisher = {G. Reimer}, author = {Peters, Wilhelm C. H. (Wilhelm C. Hartwig), 1815 -1883}, year = {1862}, pages = {Page 54}, }