APA
Phillips Charles, . (2009). 50 Puzzles Lateral Thinking. Britain: St chad's house.
Chicago
Phillips Charles, . 2009. 50 Puzzles Lateral Thinking. Britain: St chad's house.
Harvard
Phillips Charles, . (2009). 50 Puzzles Lateral Thinking. Britain: St chad's house.
MLA
Phillips Charles, . 50 Puzzles Lateral Thinking. Britain: St chad's house. 2009.