Gronfors, K. (1956). Air charter and the Warsaw convention: A study in international air law. M. Nijhoff.
芝加哥风格引文Gronfors, Kurt. Air Charter and the Warsaw Convention: A Study in International Air Law. The Hague: M. Nijhoff, 1956.
MLA引文Gronfors, Kurt. Air Charter and the Warsaw Convention: A Study in International Air Law. M. Nijhoff, 1956.
警告：这些引文格式不一定是100％准确.