Cita APA (7th ed.)
Thomas,Lowell. (1959). The vital spark: 101 outstanding lives. Doubleday & Co..
Cita Chicago (17th ed.)
Thomas,Lowell. The Vital Spark: 101 Outstanding Lives. New York: Doubleday & Co., 1959.
Cita MLA (9th ed.)
Thomas,Lowell. The Vital Spark: 101 Outstanding Lives. Doubleday & Co., 1959.
Atenció: Aquestes cites poden no estar 100% correctes.