APA

Sebestyén B., Deák Á., Hungarian Oil and Gas Company, World Petroleum Congress (14th : 1994 : Stavanger), Deák Á. & Hungarian Oil and Gas Company.Environmentally friendly motor fules in Hungary. : .

Chicago

Sebestyén Béla, Deák Árpád, Hungarian Oil and Gas Company, World Petroleum Congress (14th : 1994 : Stavanger), Deák Árpád and Hungarian Oil and Gas Company.Environmentally friendly motor fules in Hungary. : .

Harvard

Sebestyén B., Deák Á., Hungarian Oil and Gas Company, World Petroleum Congress (14th : 1994 : Stavanger), Deák Á. and Hungarian Oil and Gas Company.Environmentally friendly motor fules in Hungary. : .

MLA

Sebestyén Béla, Deák Árpád, Hungarian Oil and Gas Company, World Petroleum Congress (14th : 1994 : Stavanger), Deák Árpád and Hungarian Oil and Gas Company.: . .