Dyfyniad APA

Goldin, C., & Katz, L. F. (1997). Why the United States led in education: Lessons from secondary school expansion, 1910 to 1940. National Bureau of Economic Research.

Dyfyniad Arddull Chicago

Goldin, Claudia, and Lawrence F. Katz. Why the United States Led in Education: Lessons from Secondary School Expansion, 1910 to 1940. Cambridge: National Bureau of Economic Research, 1997.

Dyfyniad MLA

Goldin, Claudia, and Lawrence F. Katz. Why the United States Led in Education: Lessons from Secondary School Expansion, 1910 to 1940. National Bureau of Economic Research, 1997.

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