APA-ийн эшлэл(7 дахь хэвлэлт)

Krichene, N., & Christensen, B. V. (2008). Crude oil prices: Trends and forecast. International Monetary Fund.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Krichene, Noureddine, ба Benedicte Vibe Christensen. Crude Oil Prices: Trends and Forecast. [Washington, District of Columbia]: International Monetary Fund, 2008.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Krichene, Noureddine, ба Benedicte Vibe Christensen. Crude Oil Prices: Trends and Forecast. International Monetary Fund, 2008.