Gaya APA

Messinger, R.D.. (1977). Machine placement of concrete ditches, barrier walls, and curbs . : IRF.

Gaya Chicago

Messinger, R.D.. Machine placement of concrete ditches, barrier walls, and curbs. : IRF, 1977. Computer Software.

Gaya MLA

Messinger, R.D.. Machine placement of concrete ditches, barrier walls, and curbs. : IRF, 1977. Computer Software.

Gaya Turabian

Messinger, R.D.. Machine placement of concrete ditches, barrier walls, and curbs. : IRF, 1977. Computer Software.