Cita APA (7a ed.)

Addington, H. U., & Perkins, B. (1960). Youthful America: Residence in the United States of America, 1822,23,24,25. University of California.

Cita Chicago Style (17a ed.)

Addington, Henry Unwin, y Bradford Perkins. Youthful America: Residence in the United States of America, 1822,23,24,25. Berkeley: University of California, 1960.

Cita MLA (9a ed.)

Addington, Henry Unwin, y Bradford Perkins. Youthful America: Residence in the United States of America, 1822,23,24,25. University of California, 1960.