Structural systems.

MLA

Cowan, H.J, and F Wilson. Structural Systems. New York: Van Nostrand Reinhold company, 1981.

APA

Cowan, H., & Wilson, F. (1981). Structural systems. New York: Van Nostrand Reinhold company.

Chicago

Cowan, H.J., and F Wilson. Structural Systems. New York: Van Nostrand Reinhold company, 1981.