Παραπομπή APA

Levin, J. V. (1960). Export Economics Their pattern of Development in Historical Persspective.

Παραπομπή Chicago Style

Levin, Jonathan V. Export Economics Their Pattern of Development in Historical Persspective. :, 1960.

Παραπομπή MLA

Levin, Jonathan V. Export Economics Their Pattern of Development in Historical Persspective. 1960.