APA (7th ed.) Citation

Brillouin, L. (1943). The mathematics of ultra-high frequencies in radio. [publisher not identified].

Chicago Style (17th ed.) Citation

Brillouin, Léon. The Mathematics of Ultra-high Frequencies in Radio. Providence, R.I.: [publisher not identified], 1943.

MLA (9th ed.) Citation

Brillouin, Léon. The Mathematics of Ultra-high Frequencies in Radio. [publisher not identified], 1943.