ስራዎቹ
- 1) Ethiopian Philosophy Vol 1 The book of thr Wise philosophers 1974
- 2) Ethiopian Philosophy Vol 2 The treatise of Zärʼa Yaʻe̳quo and of Wäldä Ḥe̳ywåt 1976
- 3) Ethiopian Philosophy Vol 3 The treatise of Zärʼa Yaʻe̳quo and of Wäldä Ḥe̳ywåt An Analysis 1978
- 4) Ethiopian Philosophy Vol 4 The life and Maxims of Skendes 1981
- 5) Classical Ethiopian Philosophy 1985
- 6) The Source of African Philosophy: The Ethiopian Philosophy of Man 1986
