Template:Janssen, 2012
- Janssen, A.W. 2012: Systematics and biostratigraphy of holoplanktonic Mollusca from the Oligo-Miocene of the Maltese Archipelago. Bollettino del Museo Regionale di Scienze Naturali di Torino 28(2): 197–601. Full article (PDF) on ResearchGate