ebrary, Inc, Hale, D., & Hale, L. (2011). What's next?: Unconventional wisdom on the future of the world economy. Yale University Press.
Čikaški stil citiranja (17. izdanje)ebrary, Inc, David Hale, i Lyric Hale. What's Next?: Unconventional Wisdom on the Future of the World Economy. New Haven [Conn.]: Yale University Press, 2011.
MLA način citiranja (9. izdanje)ebrary, Inc, et al. What's Next?: Unconventional Wisdom on the Future of the World Economy. Yale University Press, 2011.
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