Spons' Encyclopaedia. Spons' Encylopaedia of the industrial arts, manufactures, commercial products: Division II. E.
Cita Chicago (17th ed.)Spons' Encyclopaedia. Spons' Encylopaedia of the Industrial Arts, Manufactures, Commercial Products: Division II. London: E.
Cita MLA (9th ed.)Spons' Encyclopaedia. Spons' Encylopaedia of the Industrial Arts, Manufactures, Commercial Products: Division II. E.
Atenció: Aquestes cites poden no estar 100% correctes.