APA (7th ed.) Citation

Petkova P. G. & Vershkova E. M. Elena Mikhailovna. (2016). Current trends in global oil refining industry. 2016.

Chicago Style (17th ed.) Citation

Petkova P. G. and Vershkova E. M. Elena Mikhailovna. Current Trends in Global Oil Refining Industry. 2016, 2016.

MLA (9th ed.) Citation

Petkova P. G. and Vershkova E. M. Elena Mikhailovna. Current Trends in Global Oil Refining Industry. 2016, 2016.

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