Cita APA (7th ed.)

Deel, S. A., & Howe, H. H. (1949). United States magnetic tables and magnetic charts for 1945. U.S. Govt. Print. Off..

Cita Chicago (17th ed.)

Deel, Samuel A., i Henry Herbert Howe. United States Magnetic Tables and Magnetic Charts for 1945. Washington,: U.S. Govt. Print. Off., 1949.

Cita MLA (8th ed.)

Deel, Samuel A., i Henry Herbert Howe. United States Magnetic Tables and Magnetic Charts for 1945. U.S. Govt. Print. Off., 1949.