Bies, J. D. (1983). Mapping and topographic drafting. South-Western.
Cita Chicago (17th ed.)Bies, John D. Mapping and Topographic Drafting. Cincinnati: South-Western, 1983.
Cita MLA (9th ed.)Bies, John D. Mapping and Topographic Drafting. South-Western, 1983.
Atenció: Aquestes cites poden no estar 100% correctes.