APA引文

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

Chicago Style (17th ed.) Citation

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

MLA引文

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

警告：这些引文格式不一定是100％准确.