Παραπομπή APA

Marshall, A., Guillebaud, C. W., & Royal Economic Society (Great Britain). (1961). Principles of economics (9th (variorum) ed.). London: Macmillan.

Παραπομπή Chicago Style

Marshall, Alfred, Claude William Guillebaud, and Royal Economic Society (Great Britain). Principles of Economics. 9th (variorum) ed. London: Macmillan, 1961.

Παραπομπή MLA

Marshall, Alfred, Claude William Guillebaud, and Royal Economic Society (Great Britain). Principles of Economics. 9th (variorum) ed. London: Macmillan, 1961.

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