Gaya APA

Yen, M, T., Johnson, T, E. (2018). Orbital Cellulitis and Periorbital Infections (1st ed. 2018). New york: Springer International Publishing.

Gaya MLA

Yen, Michael, T.., Johnson, Thomas, E.. "Orbital Cellulitis and Periorbital Infections". 1st ed. 2018 New york: Springer International Publishing, 2018. Text.