Keirl, A., & Christie, C. (2007). Clinical optics and refraction: A guide for optometrists, contact lens opticians and dispensing opticians (1a. ed.). Elsevier.
Citazione stile Chigago Style (17a edizione)Keirl, Andrew, e Caroline Christie. Clinical Optics and Refraction: A Guide for Optometrists, Contact Lens Opticians and Dispensing Opticians. 1a. ed. Edimburgo: Elsevier, 2007.
Citatione MLA (9a ed.)Keirl, Andrew, e Caroline Christie. Clinical Optics and Refraction: A Guide for Optometrists, Contact Lens Opticians and Dispensing Opticians. 1a. ed. Elsevier, 2007.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.