• The Genetics of Clan MacLeod, by Julia Abernethy
  
• The MacLeods of Herries, by Sir Robert Douglas of Glenbervie
  
• The Ancestry of the MacLeods, by William Matheson
  
• The MacLeods of Lewis, by William Matheson
  
• The Origin of Leod, by Alick Morrison
  
• The Ancestry of the MacLeods Reconsidered, by W. D. H. Sellar
  
• The Ancestry of Leod, by Andrew P. MacLeod