APA (7th ed.) Citation

Matthies, K., & Timm, H. (1998). World commodity prices 1998 - 1999.

Chicago Style (17th ed.) Citation

Matthies, Klaus, and Hans-Joachim Timm. World Commodity Prices 1998 - 1999. Hamburg, 1998.

MLA (8th ed.) Citation

Matthies, Klaus, and Hans-Joachim Timm. World Commodity Prices 1998 - 1999. 1998.

Warning: These citations may not always be 100% accurate.