APA-Zitierstil (7. Ausg.)

DeLong, J. B. (1992). Productivity growth and machinery investment: A long-run look, 1870 - 1980.

Chicago-Zitierstil (17. Ausg.)

DeLong, James Bradford. Productivity Growth and Machinery Investment: A Long-run Look, 1870 - 1980. Badia Fiesolana, San Domenico (FI), 1992.

MLA-Zitierstil (9. Ausg.)

DeLong, James Bradford. Productivity Growth and Machinery Investment: A Long-run Look, 1870 - 1980. 1992.