Citazione Stile APA (7a Edizione)

HELLIWELL, J. F. (1968). Public policies and private: Investment. Clarendon Press.

Citazione stile Chigago Style (17a edizione)

HELLIWELL, John F. Public Policies and Private: Investment. Oxford: Clarendon Press, 1968.

Citatione MLA (9a ed.)

HELLIWELL, John F. Public Policies and Private: Investment. Clarendon Press, 1968.