Gaya APA

Vanderwerf, P, A., Munsell, W, K. (1995). The portland cement associations guide to concrete homebuilding systems . New York: McGraw-Hill.

Gaya MLA

Vanderwerf, Pieter, A.., Munsell, W., Keith. "The portland cement associations guide to concrete homebuilding systems". New York: McGraw-Hill, 1995. Text.