Lua APA (7ú heag.)
Claes, D. H., & Garavini, G. (2020). Handbook of OPEC and the global energy order: Past, present, and future challenges. Routledge.
Lua i Stíl Chicago (17ú heag.)
Claes, Dag Harald, agus Giuliano Garavini. Handbook of OPEC and the Global Energy Order: Past, Present, and Future Challenges. London ; New York, New York: Routledge, 2020.
Lua MLA (9ú heag.)
Claes, Dag Harald, agus Giuliano Garavini. Handbook of OPEC and the Global Energy Order: Past, Present, and Future Challenges. Routledge, 2020.
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