Gaya APA

Parsons, A.W.. (1967). Earthworks in soft chalk; a study of some of the factors affecting construction . : TRRL.

Gaya Chicago

Parsons, A.W.. Earthworks in soft chalk; a study of some of the factors affecting construction. : TRRL, 1967. Chart.

Gaya MLA

Parsons, A.W.. Earthworks in soft chalk; a study of some of the factors affecting construction. : TRRL, 1967. Chart.

Gaya Turabian

Parsons, A.W.. Earthworks in soft chalk; a study of some of the factors affecting construction. : TRRL, 1967. Chart.