APA (7. basım) Alıntı

Langley, K. M. (1969). The economics of the international petroleum industry and the economy of the Philippines. The Philippine Review of Business and Economics.

Chicago Style (17. basım) Atıf

Langley, Kathleen M. "The Economics of the International Petroleum Industry and the Economy of the Philippines." The Philippine Review of Business and Economics 1969.

MLA (9th ed.) Atıf

Langley, Kathleen M. "The Economics of the International Petroleum Industry and the Economy of the Philippines." The Philippine Review of Business and Economics, 1969.