Watson, P. (1981). Twins: An investigation into the strange coincidences in the lives of separated twins. Hutchinson.
Chicago-Zitierstil (17. Ausg.)Watson, Peter. Twins: An Investigation into the Strange Coincidences in the Lives of Separated Twins. London: Hutchinson, 1981.
MLA-Zitierstil (9. Ausg.)Watson, Peter. Twins: An Investigation into the Strange Coincidences in the Lives of Separated Twins. Hutchinson, 1981.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.