Sum Stories
Robin J. Wilson
What Is Mathematical Logic?
Guillermo Badia
Alcuin's Recreational Mathematics
Marcel Danesi
Groups of Finite Morley Rank
Alexandre Borovik
Cause, Effect, and Everything in Between
Aboozar Hadavand
Gödel's Theorem
A. W. Moore
To Mock a Mockingbird and Other Logic Puzzles
Raymond M. Smullyan
Elements of Set Theory
Herbert B. Enderton
Schaum's Outline of Theory and Problems of Set Theory and Related Topics
Seymour Lipschutz
Second Level Maths. Practice Workbook 2
Linda Lapere
Second Level Maths. Practice Workbook 1
Linda Lapere
Edexcel Level 2 Extended Maths Certificate Study and Practice
Anne Stothers
Blueprints
Marcus du Sautoy
2C Practice Workbook 1
Sheona Goodall
2B Practice Workbook 2
Karen Hart
2B Practice Workbook 1
Karen Hart
2A Practice Workbook 2
Linda Lapere
2A Practice Workbook 1
Linda Lapere