Alexanderson, B. (1969). Textual remarks on Ptolemy's Harmonica and Porphyry's commentary. Acta Universitatis Gothoburgensis.
Cita Chicago Style (17a ed.)Alexanderson, Bengt. Textual Remarks on Ptolemy's Harmonica and Porphyry's Commentary. Göteborg: Acta Universitatis Gothoburgensis, 1969.
Cita MLA (9a ed.)Alexanderson, Bengt. Textual Remarks on Ptolemy's Harmonica and Porphyry's Commentary. Acta Universitatis Gothoburgensis, 1969.
Precaución: Estas citas no son 100% exactas.