Cita APA (7th ed.)

Acevedo, D., & Youman, K. (2014). Theme: Six watersheds in the history of the United States.

Cita Chicago (17th ed.)

Acevedo, Doris, i Katherine Youman. Theme: Six Watersheds in the History of the United States. 2014.

Cita MLA (8th ed.)

Acevedo, Doris, i Katherine Youman. Theme: Six Watersheds in the History of the United States. 2014.