Cita APA

Griffiths,Brian. (1975). Invisible barriers to invisible trade. Mac Millan.

Chicago Edition Citation

Griffiths,Brian. Invisible Barriers to Invisible Trade. London: Mac Millan, 1975.

Cita MLA

Griffiths,Brian. Invisible Barriers to Invisible Trade. Mac Millan, 1975.

Atenció: Aquestes cites poden no estar 100% correctes.