Dyfyniad APA

LevyMatthys, Salvadori Mario, & Woest, K. (1992). Why buildings fall down: How structures fail. W.W. Norton.

Dyfyniad Arddull Chicago

LevyMatthys, Salvadori Mario, and Kevin Woest. Why Buildings Fall Down: How Structures Fail. New York: W.W. Norton, 1992.

Dyfyniad MLA

LevyMatthys, et al. Why Buildings Fall Down: How Structures Fail. W.W. Norton, 1992.

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