Dyfyniad APA

Structural Engineers Association of California. (1999). Seismic design manual. SEAOC.

Dyfyniad Arddull Chicago

Structural Engineers Association of California. Seismic Design Manual. California: SEAOC, 1999.

Dyfyniad MLA

Structural Engineers Association of California. Seismic Design Manual. SEAOC, 1999.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.