APA

Earl A., Sensier D., . (1994). Digging Machines. London: British library cataloguing in publication data.

Chicago

Earl Amanda, Sensier Danielle, . 1994. Digging Machines. London: British library cataloguing in publication data.

Harvard

Earl A., Sensier D., . (1994). Digging Machines. London: British library cataloguing in publication data.

MLA

Earl Amanda, Sensier Danielle, . Digging Machines. London: British library cataloguing in publication data. 1994.