Cita APA (7th ed.)

Aubrey, H. G., & Darmstadter, J. (1961). Introduct: Economic challenge and response. National Planning Association.

Cita Chicago (17th ed.)

Aubrey, Henry G., i Joel Darmstadter. Introduct: Economic Challenge and Response. Washington: National Planning Association, 1961.

Cita MLA (9th ed.)

Aubrey, Henry G., i Joel Darmstadter. Introduct: Economic Challenge and Response. National Planning Association, 1961.