==External links==* Holt, Edwin B; Marvin, Walter T; Montague, William P; Perry, Ralph B; Pitkin, Walter B; Spaulding, Edward G. "The New Realism: Cooperative Studies in Philosophy", (1912).
* Критический реализм* "Holt E. B., Marvin W. T., Montague W. P., Perry R. B., Pitkin W. B., Spaulding E. G." [//www.archive.org/details/newrealismcooper00marviala The New Realism: Cooperative Studies in Philosophy].