APA (7e ed.) Bronvermelding

Worcester, D. A. (1969). The optimal employment level, the negative income tax and an alternative suggestion. Institute of Economic Development and Research, University of the Philippines.

Chicago (17e ed.) Bronvermelding

Worcester, Dean Amory. The Optimal Employment Level, the Negative Income Tax and an Alternative Suggestion. [Quezon City]: Institute of Economic Development and Research, University of the Philippines, 1969.

MLA (9e ed.) Bronvermelding

Worcester, Dean Amory. The Optimal Employment Level, the Negative Income Tax and an Alternative Suggestion. Institute of Economic Development and Research, University of the Philippines, 1969.