Cita APA (7a ed.)

Estados Unidos. Departament of Commerce. (1948). Ionospheric radio propagation. National bureau of standars.

Cita Chicago Style (17a ed.)

Estados Unidos. Departament of Commerce. Ionospheric Radio Propagation. Washington: National bureau of standars, 1948.

Cita MLA (8a ed.)

Estados Unidos. Departament of Commerce. Ionospheric Radio Propagation. National bureau of standars, 1948.