APA

Helliwell J. F., Gylfason T., .A synthesis of Keynesian, monetary, and portfolio approaches to flexible exchanges rates. : .

Chicago

Helliwell John F, Gylfason Thorvaldur, .A synthesis of Keynesian, monetary, and portfolio approaches to flexible exchanges rates. : .

Harvard

Helliwell J. F., Gylfason T., .A synthesis of Keynesian, monetary, and portfolio approaches to flexible exchanges rates. : .

MLA

Helliwell John F, Gylfason Thorvaldur, .: . .