Citazione Stile APA (7a Edizione)

Petroleum Institute of the Philippines, I. (1966). The Refining and marketing of petroleum in the Philippines. [s.n.].

Citazione stile Chigago Style (17a edizione)

Petroleum Institute of the Philippines, Inc. The Refining and Marketing of Petroleum in the Philippines. Manila: [s.n.], 1966.

Citatione MLA (9a ed.)

Petroleum Institute of the Philippines, Inc. The Refining and Marketing of Petroleum in the Philippines. [s.n.], 1966.