Cita APA (7a ed.)

Ledesma, S. A. (2008). Three-zone pupil filters.

Cita Chicago Style (17a ed.)

Ledesma, Silvia Adriana. Three-zone Pupil Filters. 2008.

Cita MLA (8a ed.)

Ledesma, Silvia Adriana. Three-zone Pupil Filters. 2008.