APA

Katayama Y., Yoshida E., Nakajima K., Nippon Oil Company, World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest), Yoshida E., Nakajima K. & Nippon Oil Company.Unleaded gasoline in Japan. : .

Chicago

Katayama Yutaka, Yoshida Eiichi, Nakajima Kiyoshi, Nippon Oil Company, World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest), Yoshida Eiichi, Nakajima Kiyoshi and Nippon Oil Company.Unleaded gasoline in Japan. : .

Harvard

Katayama Y., Yoshida E., Nakajima K., Nippon Oil Company, World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest), Yoshida E., Nakajima K. and Nippon Oil Company.Unleaded gasoline in Japan. : .

MLA

Katayama Yutaka, Yoshida Eiichi, Nakajima Kiyoshi, Nippon Oil Company, World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest), Yoshida Eiichi, Nakajima Kiyoshi and Nippon Oil Company.: . .