Cita APA (7a ed.)

O'Callagham, D. B. (1987). Roosevelt and the United States (1. publ., 14. impr.). Longman.

Cita Chicago Style (17a ed.)

O'Callagham, D. B. Roosevelt and the United States. 1. publ., 14. impr. Burnt Mill [u.a.]: Longman, 1987.

Cita MLA (9a ed.)

O'Callagham, D. B. Roosevelt and the United States. 1. publ., 14. impr. Longman, 1987.