(1842). Newspaper clipping, [Galvanic Battery Newspaper Testimonial], January 13, 1842. Philadelphia : Spirit of the Times.
Chicago-referens (17:e uppl.)Newspaper Clipping, [Galvanic Battery Newspaper Testimonial], January 13, 1842. Philadelphia : Spirit of the Times, 1842.
MLA-referens (8:e uppl.)Newspaper Clipping, [Galvanic Battery Newspaper Testimonial], January 13, 1842. Philadelphia : Spirit of the Times, 1842.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.