Não informado. (1906). Engineering and contracting. Engineering and Contracting Publishing.
Citação do estilo Chicago (17ª ed.)Não informado. Engineering and Contracting. Chicago, Ill: Engineering and Contracting Publishing, 1906.
Citação MLA (8ª ed.)Não informado. Engineering and Contracting. Engineering and Contracting Publishing, 1906.
警告：這些引文格式不一定是100％准確.