Gaya APA
Bowker, L, K. (2018).
Oxford Handbook of Geriatric Medicine (Edisi 3).
United States of America:
Oxford University Press.
Gaya MLA
Bowker, Lesley, K..
"Oxford Handbook of Geriatric Medicine".
Edisi 3
United States of America:
Oxford University Press,
2018.
Electronic Resource.