Cita APA (7th ed.)
Stevenson, R. L. (2001). A footnote to history. Project Gutenberg.
Cita Chicago (17th ed.)
Stevenson, Robert Louis. A Footnote to History. Champaign, IL: Project Gutenberg, 2001.
Cita MLA (9th ed.)
Stevenson, Robert Louis. A Footnote to History. Project Gutenberg, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.