APA استشهاد

Heller, H. R. (1977). International monetary economics. Prentice Hall.

استشهاد بنمط شيكاغو

Heller, H. Robert. International Monetary Economics. New Jersey: Prentice Hall, 1977.

MLA استشهاد

Heller, H. Robert. International Monetary Economics. Prentice Hall, 1977.