Akan : FE12. - Abu, Katharine.; Allman, Jean Marie.; Arhin, Kwame.; Austin, Gareth.; Busia, K. A.; Clark, Gracia.; Danquah, J. B.; Debrunner, Hans Werner.; Ffoulkes, Arthur.; Field, M. J.; Fortes, Meyer.; Hayford, J. E. Casely; et al. (Human Relations Area Files, 1999)