Smith, P. C. (1968). The Use of nuclear meters in soils investigations: A summary of worldwide research and practice. American Society for Testing & Materials.
Chicago-viite (17. p.)Smith, Preston Clark. The Use of Nuclear Meters in Soils Investigations: A Summary of Worldwide Research and Practice. Philadelphia: American Society for Testing & Materials, 1968.
MLA-viite (8. p.)Smith, Preston Clark. The Use of Nuclear Meters in Soils Investigations: A Summary of Worldwide Research and Practice. American Society for Testing & Materials, 1968.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.