Style de citation APA (7e éd.)

Penn, W. (2005). Electrical estimator's manual: How to estimate electrical construction projects, including everyday labor installation rates. Gulf Pub. Co..

Style de citation Chicago (17e éd.)

Penn, William. Electrical Estimator's Manual: How to Estimate Electrical Construction Projects, Including Everyday Labor Installation Rates. Houston, Tex.: Gulf Pub. Co., 2005.

Style de citation MLA (9e éd.)

Penn, William. Electrical Estimator's Manual: How to Estimate Electrical Construction Projects, Including Everyday Labor Installation Rates. Gulf Pub. Co., 2005.