Dyfyniad APA

Harvey, J., & Johnson, M. K. (1974). Modern economics: Study guide and workbook (2nd ed.). Macmillan.

Dyfyniad Arddull Chicago

Harvey, J., and M. K. Johnson. Modern Economics: Study Guide and Workbook. 2nd ed. Macmillan, 1974.

Dyfyniad MLA

Harvey, J., and M. K. Johnson. Modern Economics: Study Guide and Workbook. 2nd ed. Macmillan, 1974.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.