APA-viite

United States Department of Agriculture, & Natural Resources Conservation Service. (1995). Soil survey laboratory information manual. Lincoln: National Soil Survey Center.

Chicago-tyylinen lähdeviittaus

United States Department of Agriculture, ja Natural Resources Conservation Service. Soil Survey Laboratory Information Manual. Lincoln: National Soil Survey Center, 1995.

MLA-viite

United States Department of Agriculture, ja Natural Resources Conservation Service. Soil Survey Laboratory Information Manual. Lincoln: National Soil Survey Center, 1995.

Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.