—— Tropical agriculture. London, 1887. (p. 27–79 deal with coffee.)
Tytler, R.B. Prospects of coffee production. Aberdeen, 1878.
Ugarte, José P. The cultivation and preparation of coffee for the market. London, 1916. 124 pp.
Wildeman, Em. de. Les caféiers. Bruxelles, 1901.
—— Les plantes tropicales de grande culture—café, cacao, coca, vanilla, etc. Bruxelles, 1902. 304 pp.
Zimmermann, Albrecht. Over het enten van koffie volgens de methode van den Heer D. Butin Schaap. Batavia, 1904. 54 pp.
Periodicals
Aubry-le-Comte. Culture et production du café dans les colonies. Revue Mar. et Col., Oct., 1865.
Beugless, J.D. Coffee in its home. Overland Monthly, II: 319.
Caswell, G.W. Coffee in our new islands. Overland Monthly, n. s. XXXII: 459.