APA Edition Citation

Heading, J. (1962). An introduction to phase-integral methods. Methuen.

Chicago Edition Citation

Heading, John. An Introduction to Phase-integral Methods. London: Methuen, 1962.

MLA Edition Citation

Heading, John. An Introduction to Phase-integral Methods. Methuen, 1962.

Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.