George Ilian. Top Visionaries Who Changed The World. Jaico Publishing House.
Cita Chicago (17th ed.)George Ilian. Top Visionaries Who Changed The World. Jaico Publishing House.
Cita MLA (9th ed.)George Ilian. Top Visionaries Who Changed The World. Jaico Publishing House.
Atenció: Aquestes cites poden no estar 100% correctes.