Gretton, P. (1965). Maritime strategy: A study of defense problems. Cassell.
芝加哥风格引文Gretton, Peter. Maritime Strategy: A Study of Defense Problems. London: Cassell, 1965.
MLA引文Gretton, Peter. Maritime Strategy: A Study of Defense Problems. Cassell, 1965.
警告：这些引文格式不一定是100％准确.