Citazione Stile APA (7a Edizione)

CHRISTENSON, R. M. (1982). Challenge and decision: Political issues of our time.--Ed.6. Harper and Row Pub.

Citazione stile Chigago Style (17a edizione)

CHRISTENSON, Reo M. Challenge and Decision: Political Issues of Our Time.--Ed.6. New York: Harper and Row Pub, 1982.

Citatione MLA (9a ed.)

CHRISTENSON, Reo M. Challenge and Decision: Political Issues of Our Time.--Ed.6. Harper and Row Pub, 1982.