Metcalf, M.M. 1918. The Salpidae; a taxonomic study. Bulletin United States National Museum (2) 100 (2): 5-193.
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Metcalf, M. M.
1918
The Salpidae; a taxonomic study
Bulletin United States National Museum
2(100): 5-193
Publication
The dates provided for this reference by various authors are very different (1918, 1919 and 1932). The 1932 date is found on the title page of the BHL version of Bulletin United States National Museum 100 (2).