Cita APA (7a ed.)

Mielke, T. (2001). Oil world annual 2001. Ista Mielke.

Cita Chicago Style (17a ed.)

Mielke, Thomas. Oil World Annual 2001. Hamburg: Ista Mielke, 2001.

Cita MLA (9a ed.)

Mielke, Thomas. Oil World Annual 2001. Ista Mielke, 2001.