Παραπομπή APA

Lewis, W. A. 1., & Fabian Society (Great Britain). (1976). The principles of economic planning: A study prepared for the Fabian Society (3rd ed.). London: Allen & Unwin.

Παραπομπή Chicago Style

Lewis, W. Arthur 1915-, and Fabian Society (Great Britain). The Principles of Economic Planning: A Study Prepared for the Fabian Society. 3rd ed. London: Allen & Unwin, 1976.

Παραπομπή MLA

Lewis, W. Arthur 1915-, and Fabian Society (Great Britain). The Principles of Economic Planning: A Study Prepared for the Fabian Society. 3rd ed. London: Allen & Unwin, 1976.

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