APA

Appleyard D. R., Jr A. J. F., . (1998). International economics. New york: McGraw-Hill Companies, Inc.

Chicago

Appleyard Dennis R, Jr Alfred J Field, . 1998. International economics. New york: McGraw-Hill Companies, Inc.

Harvard

Appleyard D. R., Jr A. J. F., . (1998). International economics. New york: McGraw-Hill Companies, Inc.

MLA

Appleyard Dennis R, Jr Alfred J Field, . International economics. New york: McGraw-Hill Companies, Inc. 1998.