Cita APA (7a ed.)

Ptolomeo, C., & Toomer, G. J. (1984). Ptolemy's Almagest. Duckworth.

Cita Chicago Style (17a ed.)

Ptolomeo, Claudio, y G. J. Toomer. Ptolemy's Almagest. London: Duckworth, 1984.

Cita MLA (9a ed.)

Ptolomeo, Claudio, y G. J. Toomer. Ptolemy's Almagest. Duckworth, 1984.