Cita APA (7a ed.)

Palmer, B. (1999). Oklahoma: The spirit of america. H.N. Abrams.

Cita Chicago Style (17a ed.)

Palmer, Barbara. Oklahoma: The Spirit of America. New York: H.N. Abrams, 1999.

Cita MLA (9a ed.)

Palmer, Barbara. Oklahoma: The Spirit of America. H.N. Abrams, 1999.