Cita APA (7th ed.)
Shankle, G. E. (1946). American Mottoes and slogans. Wilson.
Cita Chicago (17th ed.)
Shankle, George Earlie. American Mottoes and Slogans. New York: Wilson, 1946.
Cita MLA (9th ed.)
Shankle, George Earlie. American Mottoes and Slogans. Wilson, 1946.
Atenció: Aquestes cites poden no estar 100% correctes.