Cita APA (7th ed.)

Vanek, J., & Billsborrow, R. (1967). Estimating foreign resource needs for economic development: Theory, method, and a case study of Colombia. McGraw-Hill.

Cita Chicago (17th ed.)

Vanek, Jaroslav, i Richard Billsborrow. Estimating Foreign Resource Needs for Economic Development: Theory, Method, and a Case Study of Colombia. New York: McGraw-Hill, 1967.

Cita MLA (9th ed.)

Vanek, Jaroslav, i Richard Billsborrow. Estimating Foreign Resource Needs for Economic Development: Theory, Method, and a Case Study of Colombia. McGraw-Hill, 1967.