Boardman, J.; Kenyon, K. M.; Moynahan, E. J.; Evans, J. D. (1976). "The Olive in the Mediterranean: Its Culture and Use [and Discussion]". Philosophical Transactions of the Royal Society B: Biological Sciences. 275: 187–96. doi:10.1098/rstb.1976.0080.
Boardman, J.; Kenyon, K. M.; Moynahan, E. J.; Evans, J. D. (1976). "The Olive in the Mediterranean: Its Culture and Use [and Discussion]". Philosophical Transactions of the Royal Society B: Biological Sciences. 275: 187–96. doi:10.1098/rstb.1976.0080.