Basic Concepts and Symbolization in Propositional Logic: Workbook 1 (Logic Self Taught Workbooks)

Basic Concepts and Symbolization in Monadic Predicate Logic: Workbook 4 (Logic Self Taught Workbooks)

Natural Deduction in Propositional Logic: Workbook 3 (Logic Self Taught Workbooks)

Natural Deduction in Propositional Logic: Workbook 3. Extra Full Edition (Logic Self Taught Workbooks)

Natural Deduction in Monadic Predicate Logic: Workbook 5 Full Edition (Logic Self Taught Workbooks)