Gaya APA

S, M. et al (2005). ESSENTIALS IN OPHTHALMOLOGY: Cataract and Refractive Surgery . New York: Springer.

Gaya MLA

S, Matondang,Corry. et al. "ESSENTIALS IN OPHTHALMOLOGY: Cataract and Refractive Surgery". New York: Springer, 2005. e-book.