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APA-viite (7. p.)
Levisohn, R., & Spiegelman, S. (1969). FURTHER EXTRACELLULAR DARWINIAN EXPERIMENTS WITH REPLICATING RNA MOLECULES: DIVERSE VARIANTS ISOLATED UNDER DIFFERENT SELECTIVE CONDITIONS. Proc Natl Acad Sci U S A.
Chicago-viite (17. p.)
Levisohn, Reuben, ja S. Spiegelman. "FURTHER EXTRACELLULAR DARWINIAN EXPERIMENTS WITH REPLICATING RNA MOLECULES: DIVERSE VARIANTS ISOLATED UNDER DIFFERENT SELECTIVE CONDITIONS." Proc Natl Acad Sci U S A 1969.
MLA-viite (9. p.)
Levisohn, Reuben, ja S. Spiegelman. "FURTHER EXTRACELLULAR DARWINIAN EXPERIMENTS WITH REPLICATING RNA MOLECULES: DIVERSE VARIANTS ISOLATED UNDER DIFFERENT SELECTIVE CONDITIONS." Proc Natl Acad Sci U S A, 1969.
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