Template:Purschke & Jouin, 1988
- Purschke, G. & Jouin, C. 1988. Anatomy and ultrastructure of the ventral pharyngeal organs of Saccocirrus (Saccocirridae) and Protodriloides (Protodriloidae fam. n.) with remarks on the phylogenetic relationships within the Protodrilida (Annelida: Polychaeta). Journal of Zoology 215(3): 405–432. DOI: 10.1111/j.1469-7998.1988.tb02849.x.