Rost, Eugen C. Coffee growing. Scientific American Supplement, 1902, LIV: 22189–22190.

Torrens, J.H. Hydro-electric installation on a coffee plantation. General Electric Review, 1915. XVIII: 219–222.

—— Electricity on a coffee finca. The Tea and Coffee Trade Journal, 1916, XXXI: 418–421.

Regional

ABYSSINIA

Southard, Addison E. The story of Abyssinia's coffees. Tea and Coffee Trade Journal, 1918, XXXIV: 212–215: 324–329.

AFRICA, NORTHERN

Rivière, Charles. Le caféier dans l'Afrique du nord. Paris, 1903.

ANGOLA

Coffee cultivation in Angola. Royal Botanic Gardens, Kew, Bull. of Misc. Information, 1894: 161–163.