Παραπομπή APA

Gray, H. P. (1972). Economics of Business Investment Abroad. Macmillan.

Παραπομπή Chicago Style

Gray, H. Peter. Economics of Business Investment Abroad. London: Macmillan, 1972.

Παραπομπή MLA

Gray, H. Peter. Economics of Business Investment Abroad. Macmillan, 1972.