APA (7th ed.) Citation

Duffett-Smith, P. (1979). Practical astronomy with your calculator. Cambridge University Press.

Chicago Style (17th ed.) Citation

Duffett-Smith, Peter. Practical Astronomy with Your Calculator. Cambridge [England] ; New York: Cambridge University Press, 1979.

MLA (9th ed.) Citation

Duffett-Smith, Peter. Practical Astronomy with Your Calculator. Cambridge University Press, 1979.