APA-viite (7. p.)
Obermeier, S. F., & Langer, W. H. (1986). Relationships between geology and engineering characteristics of soils and weathered rocks of Fairfax County and Vicinity, Virginia. United States Government Print. Office.
Chicago-viite (17. p.)
Obermeier, Stephen F., ja William H. Langer. Relationships Between Geology and Engineering Characteristics of Soils and Weathered Rocks of Fairfax County and Vicinity, Virginia. Washington: United States Government Print. Office, 1986.
MLA-viite (9. p.)
Obermeier, Stephen F., ja William H. Langer. Relationships Between Geology and Engineering Characteristics of Soils and Weathered Rocks of Fairfax County and Vicinity, Virginia. United States Government Print. Office, 1986.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.