APA

Purdue University, . (1977). Concrete pavement design. International conference. West Lafayette, Indiana, Feb 1977. Proceedings. West Lafayette, IN: Purdue University.

Chicago

Purdue University, . 1977. Concrete pavement design. International conference. West Lafayette, Indiana, Feb 1977. Proceedings. West Lafayette, IN: Purdue University.

Harvard

Purdue University, . (1977). Concrete pavement design. International conference. West Lafayette, Indiana, Feb 1977. Proceedings. West Lafayette, IN: Purdue University.

MLA

Purdue University, . Concrete pavement design. International conference. West Lafayette, Indiana, Feb 1977. Proceedings. West Lafayette, IN: Purdue University. 1977.