Heffernan,Shelagh, & Sinclair,Peter. (1990). Modern internaitonal economics. Blackwell.
Chicago Edition CitationHeffernan,Shelagh, i Sinclair,Peter. Modern Internaitonal Economics. U K: Blackwell, 1990.
Cita MLAHeffernan,Shelagh, i Sinclair,Peter. Modern Internaitonal Economics. Blackwell, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.