Facts and Comparisons (Firm). (2000). The Review of natural products: The most complete source of natural product information, 2001. Facts and Comparisons.
Chicago-viite (17. p.)Facts and Comparisons (Firm). The Review of Natural Products: The Most Complete Source of Natural Product Information, 2001. St. Louis, Mo: Facts and Comparisons, 2000.
MLA-viite (8. p.)Facts and Comparisons (Firm). The Review of Natural Products: The Most Complete Source of Natural Product Information, 2001. Facts and Comparisons, 2000.
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