APA Citation

Newton, I., & Huygens, C. Mathematical Principles of Natural Philosophy; Optics / by Sir Isaac Newton. Treatise on Light / by Christiaan Huygens. Chicago : Encyclopaedia Britannica.

Chicago Style Citation

Newton, Isaac, and Christiaan Huygens. Mathematical Principles of Natural Philosophy; Optics / By Sir Isaac Newton. Treatise On Light / By Christiaan Huygens. Chicago : Encyclopaedia Britannica.

MLA Citation

Newton, Isaac, and Christiaan Huygens. Mathematical Principles of Natural Philosophy; Optics / By Sir Isaac Newton. Treatise On Light / By Christiaan Huygens. Chicago : Encyclopaedia Britannica.

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