Παραπομπή APA

Lehman, H. (1979). Introduction to the philosophy of mathematics. Rowman and Littlefield.

Παραπομπή Chicago Style

Lehman, Hugh. Introduction to the Philosophy of Mathematics. Totowa, N.J.: Rowman and Littlefield, 1979.

Παραπομπή MLA

Lehman, Hugh. Introduction to the Philosophy of Mathematics. Rowman and Littlefield, 1979.