Não informado. (1926). General contracting. Engineering and Contracting Publishing.
Style de citation Chicago (17e éd.)Não informado. General Contracting. Chicago, Ill: Engineering and Contracting Publishing, 1926.
Style de citation MLA (8e éd.)Não informado. General Contracting. Engineering and Contracting Publishing, 1926.
Attention : ces citations peuvent ne pas être correctes à 100%.