Cita APA (7th ed.)

Okun, B., & Richardson, R. W. (1961). Studies in economic development. Holt, Rinehart and Winston.

Cita Chicago (17th ed.)

Okun, Bernard, i Richard W. Richardson. Studies in Economic Development. New York: Holt, Rinehart and Winston, 1961.

Cita MLA (9th ed.)

Okun, Bernard, i Richard W. Richardson. Studies in Economic Development. Holt, Rinehart and Winston, 1961.