Παραπομπή APA

Birmingham, W. (1966). Economics: An Introduction (2nd Revises ed.). Allen & Unwin.

Παραπομπή Chicago Style

Birmingham, Walter. Economics: An Introduction. 2nd Revises ed. London: Allen & Unwin, 1966.

Παραπομπή MLA

Birmingham, Walter. Economics: An Introduction. 2nd Revises ed. Allen & Unwin, 1966.