Spirula spirula (Linnaeus, 1758)
| The Mollusca of the Kermadec Islands W R B Oliver (1915) Transactions of the New Zealand Institute 47: 509-568 | |
| Cephalopoda of the Kermadec Islands S Stillman Berry (1916) Proceedings of the Academy of Natural Sciences of Philadelphia 68: 45-66 | |
| Guatemala Mollusca (1920) Nautilus Boston Mass 34: 37-55 | |
| The Cephalopoda of Madeira W J Rees and G E Maul (1956) Bull. Brit. Mus. (Nat. Hist.) Zool. 3: 259-281 | |
| Bermudan cephalopods G L Voss (1960) Fieldiana Zool. 39: 419-446 | |
| Cephalopods of the Philippine Islands Gilbert L Voss (1963) U.S. Natl. Mus. Bull. 234: 1-180 | |
| A phylogenetic survey of molluscan shell matrix proteins M T Ghiselin, D W Spencer E T Degens and R H Parker (1967) Breviora 262: 1-35 | |
| Systematics and zoogeography of the worldwide bathypelagic squid genus Bathyteuthis (Cephalopoda: Oegopsida) C F E Roper (1969) Bulletin of the United States National Museum 291: 1-208 |