APA (7th ed.) Citation

Duffett-Smith, P. (1981). Practical astronomy with your calculator (2. ed.). Cambridge Univ. Press.

Chicago Style (17th ed.) Citation

Duffett-Smith, Peter. Practical Astronomy with Your Calculator. 2. ed. Cambridge [u.a.]: Cambridge Univ. Press, 1981.

MLA (9th ed.) Citation

Duffett-Smith, Peter. Practical Astronomy with Your Calculator. 2. ed. Cambridge Univ. Press, 1981.