Incoming Resources
- Twins, and what they tell us about who we are, Lawrence Wright
- One and the same, my life as an identical twin and what I've learned about everyone's struggle to be singular, Abigail Pogrebin
- Raising twins, what parent want to know (and what twins want to tell them), Eileen Pearlman and Jill Alison Ganon
- Entwined lives, twins and what they tell us about human behavior, Nancy L. Segal
- Indivisible by two, lives of extraordinary twins, Nancy L. Segal