Cita APA (7a ed.)

ROBERT, S., & FLAHERTY, J. E. (1963). Basic facts of U.S. history. Collier Books.

Cita Chicago Style (17a ed.)

ROBERT, Sobel, y John E. FLAHERTY. Basic Facts of U.S. History. New York: Collier Books, 1963.

Cita MLA (9a ed.)

ROBERT, Sobel, y John E. FLAHERTY. Basic Facts of U.S. History. Collier Books, 1963.