Heldt, H., & Piechulla, B. (2005). Plant biochemistry (3rd ed.). Elsevier.
Chicago-čujuhus (17. p.)Heldt, Hans-Walter, juo Birgit Piechulla. Plant Biochemistry. 3rd ed. New Delhi: Elsevier, 2005.
MLA-čujuhus (9. p.)Heldt, Hans-Walter, juo Birgit Piechulla. Plant Biochemistry. 3rd ed. Elsevier, 2005.
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