Gaya APA

Chen, A, H., Leat, S, J. (2015). Paediatric vision care : current practice and future challenges . USA: Mc Graw-Hill.

Gaya MLA

Chen, Al, Hong., Leat, Susan, J. "Paediatric vision care : current practice and future challenges". USA: Mc Graw-Hill, 2015. Buku.