Elder, J. (2006). Pilgrimage to Vallombrosa: From Vermont to Italy in the footsteps of George Perkins Marsh. University of Virginia Press.
Citace podle Chicago (17th ed.)Elder, John. Pilgrimage to Vallombrosa: From Vermont to Italy in the Footsteps of George Perkins Marsh. Charlottesville: University of Virginia Press, 2006.
Citace podle MLA (9th ed.)Elder, John. Pilgrimage to Vallombrosa: From Vermont to Italy in the Footsteps of George Perkins Marsh. University of Virginia Press, 2006.
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