Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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