Langley, K. M. (1970). The economics of the international petroleum industry and the economy of the Philippines. Philippine Review of Economics and Business (formerly The Philippine Review of Business and Economics).
Chicago-Zitierstil (17. Ausg.)Langley, Kathleen M. "The Economics of the International Petroleum Industry and the Economy of the Philippines." Philippine Review of Economics and Business (formerly The Philippine Review of Business and Economics) 1970.
MLA-Zitierstil (9. Ausg.)Langley, Kathleen M. "The Economics of the International Petroleum Industry and the Economy of the Philippines." Philippine Review of Economics and Business (formerly The Philippine Review of Business and Economics), 1970.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.