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R. Andrew McDonald, Scott A. McLean: Somerled of Argyll: A New Look at Old Problems. In: The Scottish Historical Review, Bd. 71 (1992), S. 10. JSTOR:25530531
R. Andrew McDonald, Scott A. McLean: Somerled of Argyll: A New Look at Old Problems. In: The Scottish Historical Review, Bd. 71 (1992), S. 9. JSTOR:25530531
R. Andrew McDonald, Scott A. McLean: Somerled of Argyll: A New Look at Old Problems. In: The Scottish Historical Review, Bd. 71 (1992), S. 4. JSTOR:25530531