Felling, W. E. (1961). Notes of the Summer Institute in Dynamical Astronomy at Yale University: July 1960. St. Louis, MO.: McDonnell Aircraft.
Παραπομπή Chicago StyleFelling, William E. Notes of the Summer Institute in Dynamical Astronomy At Yale University: July 1960. St. Louis, MO.: McDonnell Aircraft, 1961.
Παραπομπή MLAFelling, William E. Notes of the Summer Institute in Dynamical Astronomy At Yale University: July 1960. St. Louis, MO.: McDonnell Aircraft, 1961.
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