Hall, D., Hammond, C., Miller, S., & Swetik , P. (1992). Level i stability analysis (LISA) documenatation for version 2.0. United States Department of Agriculture.
Chicago-viite (17. p.)Hall, David, Carol Hammond, Stanley Miller, ja Paul Swetik. Level I Stability Analysis (LISA) Documenatation for Version 2.0. Washington: United States Department of Agriculture, 1992.
MLA-viite (9. p.)Hall, David, et al. Level I Stability Analysis (LISA) Documenatation for Version 2.0. United States Department of Agriculture, 1992.
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