Ku, C-t, Chiu, C.-c,. Li, M.-m, Chu, H. (1977). Three new species of the umbel-leaf-shaped echinostomes subgenus Petasiger (Petasiger) (family Echinostomatidae) from some Chinese birds. Acta Zoologica Sinica. 23 (1): 80–87.
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Ku, C-t, Chiu, C.-c,. Li, M.-m, Chu, H.
1977
Three new species of the umbel-leaf-shaped echinostomes subgenus Petasiger (Petasiger) (family Echinostomatidae) from some Chinese birds