APA
Fuller K., Bush P., Petroleum Economist, Ruhrgas, Bush P., Petroleum Economist & Ruhrgas.Gas in the CIS & Europe. : .
Chicago
Fuller K, Bush P, Petroleum Economist, Ruhrgas, Bush P, Petroleum Economist and Ruhrgas.Gas in the CIS & Europe. : .
Harvard
Fuller K., Bush P., Petroleum Economist, Ruhrgas, Bush P., Petroleum Economist and Ruhrgas.Gas in the CIS & Europe. : .
MLA
Fuller K, Bush P, Petroleum Economist, Ruhrgas, Bush P, Petroleum Economist and Ruhrgas.: . .
