APA-viite (7. p.)
Weidman, S. (1903). Preliminary Report on the soils and agricultural conditions of the North Central Wisconsin.
Chicago-viite (17. p.)
Weidman, Samuel. Preliminary Report on the Soils and Agricultural Conditions of the North Central Wisconsin. Madison, 1903.
MLA-viite (9. p.)
Weidman, Samuel. Preliminary Report on the Soils and Agricultural Conditions of the North Central Wisconsin. 1903.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.