Não informado. (1906). Engineering and contracting. Engineering and Contracting Publishing.
Cita Chicago Style (17a ed.)Não informado. Engineering and Contracting. Chicago, Ill: Engineering and Contracting Publishing, 1906.
Cita MLA (8a ed.)Não informado. Engineering and Contracting. Engineering and Contracting Publishing, 1906.
Precaución: Estas citas no son 100% exactas.