Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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