Cita APA (7a ed.)

Ring, L., & Okoro, M. (2016). Ophthalmic standards & procedures (Revised 2nd edition.). M & K Publishing.

Cita Chicago Style (17a ed.)

Ring, Lynn, y Miriam Okoro. Ophthalmic Standards & Procedures. Revised 2nd edition. Keswick, Cumbria: M & K Publishing, 2016.

Cita MLA (8a ed.)

Ring, Lynn, y Miriam Okoro. Ophthalmic Standards & Procedures. Revised 2nd edition. M & K Publishing, 2016.