Ali Mir Najabat. Invention That Changed The World -II. National Book Trust.
Cita Chicago (17th ed.)Ali Mir Najabat. Invention That Changed The World -II. 1972 1972: National Book Trust.
Cita MLA (9th ed.)Ali Mir Najabat. Invention That Changed The World -II. National Book Trust.
Atenció: Aquestes cites poden no estar 100% correctes.