Citazione Stile APA (7a Edizione)

Hargreaves, R. (1973). Superpower: A portrait of America in the 1970's. St. Martin's Pr..

Citazione stile Chigago Style (17a edizione)

Hargreaves, Robert. Superpower: A Portrait of America in the 1970's. New York: St. Martin's Pr., 1973.

Citatione MLA (8a ed.)

Hargreaves, Robert. Superpower: A Portrait of America in the 1970's. St. Martin's Pr., 1973.