SELECT REFERENCES
For brief reading:
WESTERMARCK, History of Human Marriage, Chaps. I-VI.
HOWARD, History of Matrimonial Institutions, Vol. I, Chaps. I-III
HEINEMAN, Physical Basis of Civilization, Chaps. IV-VII.
For more extended reading:
CRAWLEY, The Mystic Rose: A Study of Primitive Marriage.
GEDDES AND THOMSON, Evolution of Sex.
LETOURNEAU, The Evolution of Marriage.
MORGAN, Ancient Society.
STARCKE, The Primitive Family.
SPENCER, Principles of Sociology, Vol. I.