Cita APA (7th ed.)

Goldin, C., & Katz, L. F. (1999). Education and income in the early 20th century: Evidence from the prairies. National Bureau of Economic Research.

Cita Chicago (17th ed.)

Goldin, Claudia, i Lawrence F. Katz. Education and Income in the Early 20th Century: Evidence from the Prairies. Cambridge: National Bureau of Economic Research, 1999.

Cita MLA (9th ed.)

Goldin, Claudia, i Lawrence F. Katz. Education and Income in the Early 20th Century: Evidence from the Prairies. National Bureau of Economic Research, 1999.