Dyfyniad APA

Gide, C. (1924). Principles of political economy. London: George G. Harrap & Company Ltd.

Dyfyniad Arddull Chicago

Gide, Charles. Principles of Political Economy. London: George G. Harrap & Company Ltd, 1924.

Dyfyniad MLA

Gide, Charles. Principles of Political Economy. London: George G. Harrap & Company Ltd, 1924.

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