Parsons, I., Loch Borralan Intrusion, Volume 17: Caledonian Igneous Rocks of Great Britain
Chapter 7: Late Ordovician to mid-Silurian alkaline intrusions of the North-west Highlands of Scotland, Geological Conservation Review, 2007, [1]
One or more of the preceding sentences incorporates text from a publication now in the public domain: Flett, John Smith (1911). "Borolanite". In Chisholm, Hugh (ed.). Encyclopædia Britannica. Vol. 4 (11th ed.). Cambridge University Press. p. 267.