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APA-viite

Brockman, J. (2014). What are you optimistic about?: Today's leading thinkers on why things are good and getting better (Reissued.). Harper Perennial.

Chicago-tyylinen lähdeviittaus

Brockman, John. What Are You Optimistic About?: Today's Leading Thinkers on Why Things Are Good and Getting Better. Reissued. New york: Harper Perennial, 2014.

MLA-viite

Brockman, John. What Are You Optimistic About?: Today's Leading Thinkers on Why Things Are Good and Getting Better. Reissued. Harper Perennial, 2014.

Harvard-tyylinen lähdeviittaus

Brockman, J. 2014. What are you optimistic about?: Today's leading thinkers on why things are good and getting better. Reissued. New york: Harper Perennial.

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