Johler, J. R., Walters, L. C., & Lilley, C. M. (1959). Low- and very low-radiofrequency tables of ground wave parameters for the spherical earth theory: The roots of Riccati's differential equation. National Bureau of Standards, United States Department of Commerce, Office of Technical Services.
Chicago Style (17th ed.) CitationJohler, J. Ralph, L. C. Walters, and C. M. Lilley. Low- and Very Low-radiofrequency Tables of Ground Wave Parameters for the Spherical Earth Theory: The Roots of Riccati's Differential Equation. Washington, D.C.: National Bureau of Standards, United States Department of Commerce, Office of Technical Services, 1959.
MLA (9th ed.) CitationJohler, J. Ralph, et al. Low- and Very Low-radiofrequency Tables of Ground Wave Parameters for the Spherical Earth Theory: The Roots of Riccati's Differential Equation. National Bureau of Standards, United States Department of Commerce, Office of Technical Services, 1959.