APA (7th ed.) Citation

Poincaré, H., & Halsted, G. B. (2012). The Foundations of Science: Science and Hypothesis, The Value of Science, Science and Method. Project Gutenberg.

Chicago Style (17th ed.) Citation

Poincaré, Henri, and George Bruce Halsted. The Foundations of Science: Science and Hypothesis, The Value of Science, Science and Method. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Poincaré, Henri, and George Bruce Halsted. The Foundations of Science: Science and Hypothesis, The Value of Science, Science and Method. Project Gutenberg, 2012.

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