Παραπομπή APA

Silverman, H. A. (1965). The substance of economics for the student and the general reader. Sir Isaac Pitman and Sons.

Παραπομπή Chicago Style

Silverman, H. A. The Substance of Economics for the Student and the General Reader. London: Sir Isaac Pitman and Sons, 1965.

Παραπομπή MLA

Silverman, H. A. The Substance of Economics for the Student and the General Reader. Sir Isaac Pitman and Sons, 1965.