Discoveries and inventions of the nineteenth century

MLA

Routledge, Robert. Discoveries and Inventions of the Nineteenth Century. London: Bracken Books, .d.

APA

Routledge, R. (.d). Discoveries and inventions of the nineteenth century. London: Bracken Books.

Chicago

Routledge, Robert Discoveries and Inventions of the Nineteenth Century. London: Bracken Books, .d.