Παραπομπή APA

Okun, B., & Richardson, R. W. (1965). Studies in economic development. Hott, rinehart and winston.

Παραπομπή Chicago Style

Okun, Bernard, και Richard W. Richardson. Studies in Economic Development. London: Hott, rinehart and winston, 1965.

Παραπομπή MLA

Okun, Bernard, και Richard W. Richardson. Studies in Economic Development. Hott, rinehart and winston, 1965.