Wilkens, H. (1981). The two German economies: A comparison between the national product of the German Democratic Republic and the Federal Republic of Germany (Rev. and updated.). Gower.
Цитирование в стиле Чикаго (17-е изд.)Wilkens, Herbert. The Two German Economies: A Comparison Between the National Product of the German Democratic Republic and the Federal Republic of Germany. Rev. and updated. Farnborough, Hants., England: Gower, 1981.
Цитирование MLA (8-е изд.)Wilkens, Herbert. The Two German Economies: A Comparison Between the National Product of the German Democratic Republic and the Federal Republic of Germany. Rev. and updated. Gower, 1981.
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