Popkin, R. H. (1980). The high road to pyrrhonism. Austin Hill Press.
Cita Chicago (17th ed.)Popkin, Richard H. The High Road to Pyrrhonism. California: Austin Hill Press, 1980.
Cita MLA (9th ed.)Popkin, Richard H. The High Road to Pyrrhonism. Austin Hill Press, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.