APA (7th ed.) Citation

Newcastle, M. C. Philosophical Letters: Or, modest Reflections upon some Opinions in Natural Philosophy.

Chicago Style (17th ed.) Citation

Newcastle, Margaret Cavendish. Philosophical Letters: Or, Modest Reflections upon Some Opinions in Natural Philosophy.

MLA (9th ed.) Citation

Newcastle, Margaret Cavendish. Philosophical Letters: Or, Modest Reflections upon Some Opinions in Natural Philosophy.

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