Ehrmann, H. W. (1964). Interest group on four continents (3rd print.). [Pittsburgh]: University of Pittsburgh press.
Styl ChicagoEhrmann, Henry Walter. Interest Group On Four Continents. 3rd print. [Pittsburgh]: University of Pittsburgh press, 1964.
Citace podle MLAEhrmann, Henry Walter. Interest Group On Four Continents. 3rd print. [Pittsburgh]: University of Pittsburgh press, 1964.
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