Gaya APA
Mah, F, S., Rhee, M, K.
(2019).
Dry eye disease : a practical guide
.
New Jersey:
Slack Incorporated.
Gaya MLA
Mah, Francis, S.., Rhee, Michelle, K..
"Dry eye disease : a practical guide".
New Jersey:
Slack Incorporated,
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E-book.