APA-referens (7:e uppl.)
Nichols, T. C. (1986). A Study of rock stresses and engineering geology in quarries of the Barre granite of Vermont. United States Government Print. Office.
Chicago-referens (17:e uppl.)
Nichols, Thomas C. A Study of Rock Stresses and Engineering Geology in Quarries of the Barre Granite of Vermont. Washington: United States Government Print. Office, 1986.
MLA-referens (9:e uppl.)
Nichols, Thomas C. A Study of Rock Stresses and Engineering Geology in Quarries of the Barre Granite of Vermont. United States Government Print. Office, 1986.
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