Cita APA (7th ed.)
Dorgan, E. J. (1934). Luther Halsey Gulick 1865-1918. Teachers College, Columbia Univ.
Cita Chicago (17th ed.)
Dorgan, Ethel Josephine. Luther Halsey Gulick 1865-1918. New York: Teachers College, Columbia Univ, 1934.
Cita MLA (9th ed.)
Dorgan, Ethel Josephine. Luther Halsey Gulick 1865-1918. Teachers College, Columbia Univ, 1934.
Atenció: Aquestes cites poden no estar 100% correctes.