Punnett, R.C. (1903). The Enteropneusta. In: Gardiner J.S., editor. The Fauna and Geography of the Maldive and Laccadive Archipelagos. London: Cambridge University Press. 2(2): 631-680 + Plates XXXVII-XLVI.
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Punnett, R.C.
1903
The Enteropneusta
In: Gardiner J.S., editor. The Fauna and Geography of the Maldive and Laccadive Archipelagos. London: Cambridge University Press