APA

Appleyard Dennis R, Field Alfred J & Cobb Steven L. (2006). International economics. New York: McGraw-Hill Higher Education.

Chicago

Appleyard Dennis R, Field Alfred J and Cobb Steven L. 2006. International economics. New York: McGraw-Hill Higher Education.

Harvard

Appleyard Dennis R, Field Alfred J and Cobb Steven L. (2006). International economics. New York: McGraw-Hill Higher Education.

MLA

Appleyard Dennis R, Field Alfred J and Cobb Steven L. International economics. New York: McGraw-Hill Higher Education. 2006.