International Commission on Zoological Nomenclature (IZCN). (1957). Opinion 478. Validation under the plenary powers of the generic name "
Polycitor" [Renier], [1804], and of the specific name "
crystallinus" [Renier], [1804], as used by the foregoing author in the combination "
Polycitor crystallinus" (class Urochordata) ("Opinion" supplementary to "Opinion" 427).
Opinions and Declarations Rendered by the International Commission on Zoological Nomenclature. 16(21): 353–364.