Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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