APA استشهاد

Marshall, A. (1974). Principles of Economics, an Introductory Volume (8th ed.). E L B S.

استشهاد بنمط شيكاغو

Marshall, Alfred. Principles of Economics, an Introductory Volume. 8th ed. London: E L B S, 1974.

MLA استشهاد

Marshall, Alfred. Principles of Economics, an Introductory Volume. 8th ed. E L B S, 1974.