Παραπομπή APA

Wolf, J. N. (1973). Cost benefit and cost effectiveness: Studies and analysis. Allen & Unwin.

Παραπομπή Chicago Style

Wolf, J. N. Cost Benefit and Cost Effectiveness: Studies and Analysis. London: Allen & Unwin, 1973.

Παραπομπή MLA

Wolf, J. N. Cost Benefit and Cost Effectiveness: Studies and Analysis. Allen & Unwin, 1973.