Ullman, R. Ending the cold war. s.e.
Cita Chicago Style (17a ed.)Ullman, Richard. Ending the Cold War. s.l.: s.e.
Cita MLA (9a ed.)Ullman, Richard. Ending the Cold War. s.e.
警告：这些引文格式不一定是100％准确.
Cita APA (7a ed.)
Ullman, R. Ending the cold war. s.e.
Cita Chicago Style (17a ed.)Ullman, Richard. Ending the Cold War. s.l.: s.e.
Cita MLA (9a ed.)Ullman, Richard. Ending the Cold War. s.e.