Παραπομπή APA

Silverman, H. A. (1964). The substance of economics: For the student and the general reader (16th ed.). London: Pitman.

Παραπομπή Chicago Style

Silverman, H. A. The Substance of Economics: For the Student and the General Reader. 16th ed. London: Pitman, 1964.

Παραπομπή MLA

Silverman, H. A. The Substance of Economics: For the Student and the General Reader. 16th ed. London: Pitman, 1964.

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