Heading, J. (1962). An introduction to phase-integral methods. Methuen.
シカゴスタイル引用形Heading, John. An Introduction to Phase-integral Methods. London: Methuen, 1962.
MLA引用形式Heading, John. An Introduction to Phase-integral Methods. Methuen, 1962.
警告: この引用は必ずしも正確ではありません.