Citazione Stile APA (7a Edizione)

Colm, G. (1952). The American economy in 1960: Economic progress in a world of tension. National Planning Association].

Citazione stile Chigago Style (17a edizione)

Colm, Gerhard. The American Economy in 1960: Economic Progress in a World of Tension. [Washington: National Planning Association], 1952.

Citatione MLA (9a ed.)

Colm, Gerhard. The American Economy in 1960: Economic Progress in a World of Tension. National Planning Association], 1952.