ELLIOTT, M., SIMPSON, T., RICHTER, D., & FONN, D. (1997). Repeatability and Accuracy of Automated Refraction: A Comparison of the Nikon NRK-8000, the Nidek AR-1000, and Subjective Refraction. Optometry and vision science, 74(6), 434-438. https://doi.org/10.1097/00006324-199706000-00028
Chicago Style (17th ed.) CitationELLIOTT, MICHELLE, TREFFORD SIMPSON, DORIS RICHTER, and DESMOND FONN. "Repeatability and Accuracy of Automated Refraction: A Comparison of the Nikon NRK-8000, the Nidek AR-1000, and Subjective Refraction." Optometry and Vision Science 74, no. 6 (1997): 434-438. https://doi.org/10.1097/00006324-199706000-00028.
MLA (9th ed.) CitationELLIOTT, MICHELLE, et al. "Repeatability and Accuracy of Automated Refraction: A Comparison of the Nikon NRK-8000, the Nidek AR-1000, and Subjective Refraction." Optometry and Vision Science, vol. 74, no. 6, 1997, pp. 434-438, https://doi.org/10.1097/00006324-199706000-00028.