APA (7th ed.) Citation

Knapp, D. G. (1980). On modeling magnetic fields on a sphere with dipoles and quadrupoles. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Knapp, David Goodwin. On Modeling Magnetic Fields on a Sphere with Dipoles and Quadrupoles. Washington: United States Department of the Interior, Geological Survey, 1980.

MLA (9th ed.) Citation

Knapp, David Goodwin. On Modeling Magnetic Fields on a Sphere with Dipoles and Quadrupoles. United States Department of the Interior, Geological Survey, 1980.