Mathews, S. (1920). The spiritual interpretation of history. Harvard University.
Dyfyniad Arddull ChicagoMathews, Shailer. The Spiritual Interpretation of History. Cambridge: Harvard University, 1920.
Dyfyniad MLAMathews, Shailer. The Spiritual Interpretation of History. Harvard University, 1920.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.