Παραπομπή σε μορφή APA (7η εκδ.)

Weisskopf, N., & Schlumberger, C. E. (2014). Ready for takeoff?: The potential for low-cost carriers in developing countries. World Bank Group.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Weisskopf, Nora, και Charles E. Schlumberger. Ready for Takeoff?: The Potential for Low-cost Carriers in Developing Countries. Washington, District of Columbia: World Bank Group, 2014.

Παραπομπή σε μορφή MLA (9th εκδ.)

Weisskopf, Nora, και Charles E. Schlumberger. Ready for Takeoff?: The Potential for Low-cost Carriers in Developing Countries. World Bank Group, 2014.