Cita APA (7th ed.)

Snyder, J. P. (1987). Map projections: A working manual. U.S. G.P.O.

Cita Chicago (17th ed.)

Snyder, John Parr. Map Projections: A Working Manual. Washington, D. C: U.S. G.P.O, 1987.

Cita MLA (9th ed.)

Snyder, John Parr. Map Projections: A Working Manual. U.S. G.P.O, 1987.