American Biographical Institute. (2003). Great minds of the 21st century. American Biographical Institute.
Citazione stile Chigago Style (17a edizione)American Biographical Institute. Great Minds of the 21st Century. Raleigh, N.C: American Biographical Institute, 2003.
Citatione MLA (9a ed.)American Biographical Institute. Great Minds of the 21st Century. American Biographical Institute, 2003.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.