APA (7th ed.) Citation

Laplace, P. S. (1809). The system of the world. Printed for R. Phillips.

Chicago Style (17th ed.) Citation

Laplace, Pierre Simon. The System of the World. London: Printed for R. Phillips, 1809.

MLA (9th ed.) Citation

Laplace, Pierre Simon. The System of the World. Printed for R. Phillips, 1809.