APA-viite (7. p.)
Clark, J. E., & Nelson, F. W. (1988). The lithic artifacts of La Libertad, Chiapas, Mexico: An economic perspective. New World Archaeological Foundation ; Brigham Young University.
Chicago-viite (17. p.)
Clark, John E., ja Fred W. Nelson. The Lithic Artifacts of La Libertad, Chiapas, Mexico: An Economic Perspective. Provo, Utah: New World Archaeological Foundation ; Brigham Young University, 1988.
MLA-viite (9. p.)
Clark, John E., ja Fred W. Nelson. The Lithic Artifacts of La Libertad, Chiapas, Mexico: An Economic Perspective. New World Archaeological Foundation ; Brigham Young University, 1988.
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