APA

Gebler S., . (1981). Effects of high-range water reducers on the properties of freshly mixed and hardened flowing concrete. Skokie, IL: Portland Cement Association. Research and development bulletin RD 81.01T.

Chicago

Gebler SH, . 1981. Effects of high-range water reducers on the properties of freshly mixed and hardened flowing concrete. Skokie, IL: Portland Cement Association. Research and development bulletin RD 81.01T.

Harvard

Gebler S., . (1981). Effects of high-range water reducers on the properties of freshly mixed and hardened flowing concrete. Skokie, IL: Portland Cement Association. Research and development bulletin RD 81.01T.

MLA

Gebler SH, . Effects of high-range water reducers on the properties of freshly mixed and hardened flowing concrete. Skokie, IL: Portland Cement Association. Research and development bulletin RD 81.01T. 1981.