Cita APA (7a ed.)

Holtz, W. G. (1969). Soil as an engineering material. United States Department of the Interior.

Cita Chicago Style (17a ed.)

Holtz, Wesley G. Soil as an Engineering Material. Washington, D.C: United States Department of the Interior, 1969.

Cita MLA (9a ed.)

Holtz, Wesley G. Soil as an Engineering Material. United States Department of the Interior, 1969.