Tohutoro APA (7th ed.)

Fogel, R. W., & Engerman, S. L. (1974). Time on the cross: The economics of American Negro slavery. Little, Brown.

Tohutoru Kātū Chicago (17th ed.)

Fogel, Robert William, me Stanley L. Engerman. Time on the Cross: The Economics of American Negro Slavery. Boston: Little, Brown, 1974.

Tohutoro MLA (9th ed.)

Fogel, Robert William, me Stanley L. Engerman. Time on the Cross: The Economics of American Negro Slavery. Little, Brown, 1974.