APA (7th ed.) Citation

(1972). Right angles; paper-folding geometry / by Jo Phillips. Illustrated by Giulio Maestro.

Chicago Style (17th ed.) Citation

Right Angles; Paper-folding Geometry / by Jo Phillips. Illustrated by Giulio Maestro. 1972.

MLA (9th ed.) Citation

Right Angles; Paper-folding Geometry / by Jo Phillips. Illustrated by Giulio Maestro. 1972.

Warning: These citations may not always be 100% accurate.