Author not established. ዓብዱልራሕማን - ዩኑስ. Date not established. EHREA archive: /library/documents/doc-fc1b7d724a7a2f2512291745/
[1] ዓብዱልራሕማን - ዩኑስ. Original source: http://www.ehrea.org/Abdulrahma.pdf. Preserved original: /library/originals/22a9e8dcb0d2f61f9befa42a01bd223788f66d79de7fe3ef46b3d78279c0bbe4.pdf. SHA-256: 22a9e8dcb0d2f61f9befa42a01bd223788f66d79de7fe3ef46b3d78279c0bbe4