APA Citation

Mielke, T., & ISTA Mielke GmbH. (1991). Oil world annual 1991. Hamburg: ISTA Mielke GmbH.

Chicago Style Citation

Mielke, Thomas, and ISTA Mielke GmbH. Oil World Annual 1991. Hamburg: ISTA Mielke GmbH, 1991.

MLA Citation

Mielke, Thomas, and ISTA Mielke GmbH. Oil World Annual 1991. Hamburg: ISTA Mielke GmbH, 1991.

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