*Swayne, H.G.C., "Seventeen Trips through Somaliland and a visit to Abyssinia: With Supplementary preface on the 'Mad Mullah' risings", 1903.
*Swayne, H.G.C., "Seventeen Trips through Somaliland and a visit to Abyssinia: With Supplementary preface on the 'Mad Mullah' risings", 1903.