Thumm, . G. W. (1967). Parties and the Governmental system: A book of readings. Prentice-Hall.
Tohutoru Kātū Chicago (17th ed.)Thumm, Garold W. Parties and the Governmental System: A Book of Readings. Englewood cliffs: Prentice-Hall, 1967.
Tohutoro MLA (9th ed.)Thumm, Garold W. Parties and the Governmental System: A Book of Readings. Prentice-Hall, 1967.
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