Cita APA (7a ed.)

Cohrs, H. (1995). 500 years of earthmoving. KHL Group.

Cita Chicago Style (17a ed.)

Cohrs, Heinz-Herbert. 500 Years of Earthmoving. Wadhurst, U.K.: KHL Group, 1995.

Cita MLA (9a ed.)

Cohrs, Heinz-Herbert. 500 Years of Earthmoving. KHL Group, 1995.