Blair, W. (1949). Factual prose. Scott, Foresman.
Cita Chicago (17th ed.)Blair, Walter. Factual Prose. New York: Scott, Foresman, 1949.
Cita MLA (9th ed.)Blair, Walter. Factual Prose. Scott, Foresman, 1949.
Atenció: Aquestes cites poden no estar 100% correctes.