Dyfyniad APA

(1961). The Design And Analysis Of Slabless Tread Riser Stairs. s.n.

Dyfyniad Arddull Chicago

The Design And Analysis Of Slabless Tread Riser Stairs. s.n, 1961.

Dyfyniad MLA

The Design And Analysis Of Slabless Tread Riser Stairs. s.n, 1961.

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