Παραπομπή APA

Billerbeck,K, & Yasugi,Y. (1979). Private direct foreign investment in developing countries. World Bank.

Παραπομπή Chicago Style

Billerbeck,K, και Yasugi,Y. Private Direct Foreign Investment in Developing Countries. Washington: World Bank, 1979.

Παραπομπή MLA

Billerbeck,K, και Yasugi,Y. Private Direct Foreign Investment in Developing Countries. World Bank, 1979.