B.  Verdcourt, ?Annonaceae?, in Flora of Tropical East Africa, E.  Milne-Redhead and Polhill, R. M., Eds. London: Crown Agents for Oversea Governments and Administrations, 1971, pp. 1-131.

B.  Verdcourt, ?Notes on East African Annonaceae?, Kew BulletinKew Bulletin, vol. 25, pp. 1-34, 1971.

B.  Verdcourt, ?Annonaceae?, in Flora of Tropical East Africa, E.  Milne-Redhead and Polhill, R. M., Eds. London: Crown Agents for Oversea Governments and Administrations, 1971, pp. 1-131.

B.  Verdcourt, ?Notes on African Annonaceae?, Kew Bulletin, vol. 25, pp. 1-24, 1971.