1. A comparison of soil properties under different land use types in a part of the Nigerian cocoa belt;Adejuwon;Catena,1988
2. Pteridium aquilinum, une ptéridophyte envahissante des cultures pérennes du sud de la Côte d'Ivoire: quelques notes ethnobotaniques;Adou;Tropicultura,2007
3. Mount kupe forest project, Cameroon. Second annual report to European Union, October 1992–September 1993;Birdlife International,1993
4. Hydrometer method improved for making particle size analysis of soil;Bouyoucos;Agron. J.,1962
5. The birds of mount Kupe, southwest Cameroon;Bowden;Malimbus,2001