Robins, L. N.
Deviant Children Grown Up
Williams & Wilkins, Baltimore 1966
ASIN: B000GVQN6I
Wilson, E. O.
On Human Nature
Harvard University Press, Cambridge, MA 2004
ISBN: 0674016386
Alexander, R. D.
The Biology of Moral Systems
Aldine Transaction 1987
ISBN: 0202011747
Batson, D. C.
The Altruism Question
Lawrence Erlbaum Associates, Hillsdale, NJ 1991
ISBN: 0805802452
Dugatkin, L.A.
The Altruism Equation. Seven Scientists Search for the Origins of Goodness
Princeton University Press, Princeton, N 2006
ISBN: 0691125902