APA (7th ed.) Citation

British Museum & Gayangos, P. d. (1875). Catalogue of the manuscripts in the spanish language in the British Museum. Printed by Order of the Trustees.

Chicago Style (17th ed.) Citation

British Museum and Pascual de Gayangos. Catalogue of the Manuscripts in the Spanish Language in the British Museum. London: Printed by Order of the Trustees, 1875.

MLA (9th ed.) Citation

British Museum and Pascual de Gayangos. Catalogue of the Manuscripts in the Spanish Language in the British Museum. Printed by Order of the Trustees, 1875.