Gaya APA

Winkel, S, R. et al (2007). Building codes illustrated for elementary and secondary schools: a guide to understanding the 2006 International Building Code for elementary and secondary schools . America: John Wiley & Sons.

Gaya MLA

Winkel, Steven, R.. et al. "Building codes illustrated for elementary and secondary schools: a guide to understanding the 2006 International Building Code for elementary and secondary schools". America: John Wiley & Sons, 2007. Buku.