APA (7th ed.) Citation

Wait, J. R., & Spies, K. P. Characteristics of the earth-ionosphere waveguide for VLF radio waves. Government Printing Office.

Chicago Style (17th ed.) Citation

Wait, James Richard, and K. P. Spies. Characteristics of the Earth-ionosphere Waveguide for VLF Radio Waves. Washington, D. C: Government Printing Office.

MLA (9th ed.) Citation

Wait, James Richard, and K. P. Spies. Characteristics of the Earth-ionosphere Waveguide for VLF Radio Waves. Government Printing Office.