APA aipamena

Radetzki,Marian. (1990). A guide to primary commodities in the world economy. Basil Blackwell.

Chicago Style aipamena

Radetzki,Marian. A Guide to Primary Commodities in the World Economy. U K: Basil Blackwell, 1990.

MLA aipamena

Radetzki,Marian. A Guide to Primary Commodities in the World Economy. Basil Blackwell, 1990.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.