Cita APA (7a ed.)

Richardson, J. D. (1980). Understanding international economics: Theory and practice. Little, Brown and Company.

Cita Chicago Style (17a ed.)

Richardson, J. David. Understanding International Economics: Theory and Practice. Boston [etc.]: Little, Brown and Company, 1980.

Cita MLA (9a ed.)

Richardson, J. David. Understanding International Economics: Theory and Practice. Little, Brown and Company, 1980.