APA Style

Khan, Sarah. (2014). Shapes : Brain-Busting Puzzles . London: QED Publishing.

Chicago Style

Khan, Sarah. Shapes : Brain-Busting Puzzles. London: QED Publishing, 2014. Text.

MLA Style

Khan, Sarah. Shapes : Brain-Busting Puzzles. London: QED Publishing, 2014. Text.

Turabian Style

Khan, Sarah. Shapes : Brain-Busting Puzzles. London: QED Publishing, 2014. Print.