APA stil citiranja

Špirić, Z., & Stockwell, P. B. (1999). Environment protection and mercury control during natural gas processing: Environment protection and mercury control during natural gas processing. Nafta (Zagreb).

Chicago stil citiranja

Špirić, Zdravko, and Peter B. Stockwell. "Environment protection and mercury control during natural gas processing: Environment protection and mercury control during natural gas processing." 1999.

MLA stil citiranja

Špirić, Zdravko, and Peter B. Stockwell. "Environment protection and mercury control during natural gas processing: Environment protection and mercury control during natural gas processing." 1999.