APA (7th ed.) Citation

Ratledge, D. (1999). Software and data for practical astronomers: The best of the Internet. Springer.

Chicago Style (17th ed.) Citation

Ratledge, David. Software and Data for Practical Astronomers: The Best of the Internet. London ; New York: Springer, 1999.

MLA (9th ed.) Citation

Ratledge, David. Software and Data for Practical Astronomers: The Best of the Internet. Springer, 1999.