Great Britain. Patent Office. (1870). Patents for inventions: Abridgements of specifications relating to books, portfolios card-cases. Office of the Commissioners of Patents for Inventions.
Citazione stile Chigago Style (17a edizione)Great Britain. Patent Office. Patents for Inventions: Abridgements of Specifications Relating to Books, Portfolios Card-cases. Lond.: Office of the Commissioners of Patents for Inventions, 1870.
Citatione MLA (8a ed.)Great Britain. Patent Office. Patents for Inventions: Abridgements of Specifications Relating to Books, Portfolios Card-cases. Office of the Commissioners of Patents for Inventions, 1870.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.