Cita APA (7th ed.)

NORTH, D. C., & MILLER, R. L. (1978). The economics of public issues.-- Ed.4. Harper and Row.

Cita Chicago (17th ed.)

NORTH, Douglass C., i Roger Leroy MILLER. The Economics of Public Issues.-- Ed.4. SAn Francisco: Harper and Row, 1978.

Cita MLA (9th ed.)

NORTH, Douglass C., i Roger Leroy MILLER. The Economics of Public Issues.-- Ed.4. Harper and Row, 1978.