Jill Norman, Down to the pond, Londres, Hutchinson, 1961, p. 42-43.
Archives du mot-clé rags
They pay no regard to fashion
Martin Francis Duncan & Lucy Theresa Duncan, Insect Life In Pond And Stream, Humphrey Milford, Oxford University Press, (1913), 1941, pp. 70-75.
Verses of Rudyard Kipking
Rudyard Kipling , Verses 1889-1896, Londres, Doubleday, 1919.
Food for fishes
A. N. Cheney, « Food for Fishes », Annual Report of the Commissioners of Fisheries, Games and Forests of the State of New York, New York an Albany, vol.1, 1896, p. 109.