Duffett-Smith, P. (1988). Practical astronomy with your calculator (Third edition.). Cambridge University Press. https://doi.org/10.1017/CBO9780511564895
Chicago-Zitierstil (17. Ausg.)Duffett-Smith, Peter. Practical Astronomy with Your Calculator. Third edition. Cambridge: Cambridge University Press, 1988. https://doi.org/10.1017/CBO9780511564895.
MLA-Zitierstil (9. Ausg.)Duffett-Smith, Peter. Practical Astronomy with Your Calculator. Third edition. Cambridge University Press, 1988. https://doi.org/10.1017/CBO9780511564895.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.