Popkin, R. H. (1980). The high road to pyrrhonism. Austin Hill Press.
Chicago-čujuhus (17. p.)Popkin, Richard H. The High Road to Pyrrhonism. California: Austin Hill Press, 1980.
MLA-čujuhus (9. p.)Popkin, Richard H. The High Road to Pyrrhonism. Austin Hill Press, 1980.
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