F, E., DE, G., & EK, S. (1994). The Advanced Glaucoma Intervention Study (AGIS): 1. Study design and methods and baseline characteristics of study patients. Controlled clinical trials, 15(4), 299. https://doi.org/10.1016/0197-2456(94)90046-9
Chicago Style (17th ed.) CitationF, Ederer, Gaasterland DE, and Sullivan EK. "The Advanced Glaucoma Intervention Study (AGIS): 1. Study Design and Methods and Baseline Characteristics of Study Patients." Controlled Clinical Trials 15, no. 4 (1994): 299. https://doi.org/10.1016/0197-2456(94)90046-9.
MLA (9th ed.) CitationF, Ederer, et al. "The Advanced Glaucoma Intervention Study (AGIS): 1. Study Design and Methods and Baseline Characteristics of Study Patients." Controlled Clinical Trials, vol. 15, no. 4, 1994, p. 299, https://doi.org/10.1016/0197-2456(94)90046-9.