282642 Williamson, J. (1952). Surveying and field work: A practical text-book. London : Constable.
Cita Chicago (17th ed.)282642 Williamson, James. Surveying and Field Work: A Practical Text-book. London : Constable, 1952.
Cita MLA (9th ed.)282642 Williamson, James. Surveying and Field Work: A Practical Text-book. London : Constable, 1952.
Atenció: Aquestes cites poden no estar 100% correctes.