Gaya APA

, ., Olsen, K. (2012). Commercial Steel Estimating: A Comprehensive Guide to Mastering the Basics . Industrial Press, 2012: Industrial Press, 2012.

Gaya MLA

, ., Olsen, Kerri. "Commercial Steel Estimating: A Comprehensive Guide to Mastering the Basics". Industrial Press, 2012: Industrial Press, 2012, 2012. .