APA (7th ed.) Citation

ISTA Mielke GmbH & Mielke, T. (1993). Oil world annual 1993: Advance issue. ISTA Mielke GmbH.

Chicago Style (17th ed.) Citation

ISTA Mielke GmbH and Thomas Mielke. Oil World Annual 1993: Advance Issue. Hamburg: ISTA Mielke GmbH, 1993.

MLA (9th ed.) Citation

ISTA Mielke GmbH and Thomas Mielke. Oil World Annual 1993: Advance Issue. ISTA Mielke GmbH, 1993.