Gabriel, R. A., & Metz, K. S. (1991). From Sumer to Rome: The military capabilities of ancient armies Contributions in military studies.
芝加哥风格引文Gabriel, Richard A., 与 Karen S. Metz. "From Sumer to Rome: The Military Capabilities of Ancient Armies." Contributions in Military Studies 1991.
MLA引文Gabriel, Richard A., 与 Karen S. Metz. "From Sumer to Rome: The Military Capabilities of Ancient Armies." Contributions in Military Studies, 1991.
警告:这些引文格式不一定是100%准确.