APA (7th ed.) Citation

Johnson, D. A., & Glenn, W. H. The theorem of pythagoras. John Murray.

Chicago Style (17th ed.) Citation

Johnson, Donovan A., and William H. Glenn. The Theorem of Pythagoras. John Murray.

MLA (8th ed.) Citation

Johnson, Donovan A., and William H. Glenn. The Theorem of Pythagoras. John Murray.

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