Polyphagism,第203頁. T. Bradley; Samuel Fothergill; William Hutchinson (编). Polyphagism. London Medical and Physical Journal (London: J. Souter). 1819, 42: 203 [2015-06-04]. (原始内容存档于2019-08-11).
Polyphagism,第205頁. T. Bradley; Samuel Fothergill; William Hutchinson (编). Polyphagism. London Medical and Physical Journal (London: J. Souter). 1819, 42: 203 [2015-06-04]. (原始内容存档于2019-08-11).
Polyphagism,第204頁. T. Bradley; Samuel Fothergill; William Hutchinson (编). Polyphagism. London Medical and Physical Journal (London: J. Souter). 1819, 42: 203 [2015-06-04]. (原始内容存档于2019-08-11).
Polyphagism,第203頁. T. Bradley; Samuel Fothergill; William Hutchinson (编). Polyphagism. London Medical and Physical Journal (London: J. Souter). 1819, 42: 203 [2015-06-04]. (原始内容存档于2019-08-11).
Polyphagism,第205頁. T. Bradley; Samuel Fothergill; William Hutchinson (编). Polyphagism. London Medical and Physical Journal (London: J. Souter). 1819, 42: 203 [2015-06-04]. (原始内容存档于2019-08-11).
Polyphagism,第204頁. T. Bradley; Samuel Fothergill; William Hutchinson (编). Polyphagism. London Medical and Physical Journal (London: J. Souter). 1819, 42: 203 [2015-06-04]. (原始内容存档于2019-08-11).