Fekrat, S., & Finkelstein, D. (1998). The Central Vein Occlusion Study (CVOS). In P. Kertes & M. D. Conway (Eds.), The Clinical Trials in Ophthalmology: a summary and practice guide (pp. 129–144). Baltimore: Williams & Wilkins.

Fekrat, S., and D. Finkelstein. “The Central Vein Occlusion Study (CVOS).” In The Clinical Trials in Ophthalmology: A Summary and Practice Guide, edited by P. Kertes and M. D. Conway, 129–44. Baltimore: Williams & Wilkins, 1998.

Fekrat S, Finkelstein D. The Central Vein Occlusion Study (CVOS). In: Kertes P, Conway MD, editors. The Clinical Trials in Ophthalmology: a summary and practice guide. Baltimore: Williams & Wilkins; 1998. p. 129–44.

Fekrat, S., and D. Finkelstein. “The Central Vein Occlusion Study (CVOS).” The Clinical Trials in Ophthalmology: A Summary and Practice Guide, edited by P. Kertes and M. D. Conway, Williams & Wilkins, 1998, pp. 129–44.

Fekrat S, Finkelstein D. The Central Vein Occlusion Study (CVOS). In: Kertes P, Conway MD, editors. The Clinical Trials in Ophthalmology: a summary and practice guide. Baltimore: Williams & Wilkins; 1998. p. 129–144.