Cita APA

Lief, L., & Light, J. F. (1969). The modern age. New York: Holt, Rinehart and Winston.

Chicago Style Citation

Lief, Leonard., i James F. Light. The Modern Age. New York: Holt, Rinehart and Winston, 1969.

Cita MLA

Lief, Leonard., i James F. Light. The Modern Age. New York: Holt, Rinehart and Winston, 1969.