Landheer, B., & Essen, J. L. F. v. (1953). Fundamentals of public international law. A. W. Sitjhoff.
芝加哥风格引文Landheer, Bartholomeus, 与 Jan Louis Frederick van Essen. Fundamentals of Public International Law. Leyden: A. W. Sitjhoff, 1953.
MLA引文Landheer, Bartholomeus, 与 Jan Louis Frederick van Essen. Fundamentals of Public International Law. A. W. Sitjhoff, 1953.
警告：这些引文格式不一定是100％准确.