1. Alpers, D. H., Digestion and absorption of carbohydrates and proteins, in: Physiology of the Gastrointestinal Tract, vol. 2, pp. 1469–1486. Ed. L. R. Johnson. Raven Press, New York 1987.
2. Antonovics, J. and van Tienderen, P. H., Ontoecogenophyloconstraints. Trends in Ecol. Evol.6 (1991) 166–167.
3. Baker, H. G., Evolutionary relationships between flowering plants and animals, in: Tropical Forest Ecosystems in Africa and South America: A Comparative Review, pp. 149–159. Eds P. J. Meggers, E. Ayensu and W. D. Duckworth. Smithsonian Institution Press, Washington D.C. 1972.
4. Baker, H. G., Sugar concentrations in nectars from hummingbird flowers. Biotropica7 (1975) 37–41.
5. Baker, H. G., Anthecology: Old Testament, New Testament, Apocrypha. N. Z. J. Bot.17 (1979) 431–440.