APA (7. basım) Alıntı

Heller, H. R. (1968). International trade; theory and empirical evidence. Prentice Hall.

Chicago Style (17. basım) Atıf

Heller, Heinz Robert. International Trade; Theory and Empirical Evidence. Englewood Cliffs, N.J.: Prentice Hall, 1968.

MLA (9th ed.) Atıf

Heller, Heinz Robert. International Trade; Theory and Empirical Evidence. Prentice Hall, 1968.