- eBookReasoning and Formal LogicRichard L. Epstein
- eBookThe Pocket Guide to Critical ThinkingRichard L. Epstein
- eBookThe Fundamentals of Argument AnalysisRichard L. Epstein
- eBookCause and Effect, Conditionals, ExplanationsRichard L. Epstein
- eBookAn Introduction to Formal LogicRichard L. Epstein
- eBookReasoning in Science and MathematicsRichard L. Epstein
- eBookHow to ReasonRichard L. Epstein
- eBookPrescriptive ReasoningRichard L. Epstein
- eBookHow to Reason + Reasoning in the SciencesRichard L. Epstein
- eBookClassical Mathematical LogicRichard L. Epstein
- eBookGuía Breve para el Pensamiento CríticoRichard L. Epstein
- eBookAmerican GesturesAlex Raffi
- eBookConventional GesturesRichard L. Epstein